Bump actions/checkout from 4 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/cicd-1-pull-request.yaml

@@ -26,7 +26,7 @@ jobs:
       does_pull_request_exist: ${{ steps.pr_exists.outputs.does_pull_request_exist }}
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: "Set CI/CD variables"
         id: variables
         run: |

.github/workflows/cicd-2-publish.yaml

@@ -22,7 +22,7 @@ jobs:
       version: ${{ steps.variables.outputs.version }}
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: "Set CI/CD variables"
         id: variables
         run: |
@@ -52,7 +52,7 @@ jobs:
     timeout-minutes: 3
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: "Get the artefacts"
         run: |
           echo "Getting the artefacts created by the build stage ..."

.github/workflows/cicd-3-deploy.yaml

@@ -24,7 +24,7 @@ jobs:
       tag: ${{ steps.variables.outputs.tag }}
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: "Set CI/CD variables"
         id: variables
         run: |
@@ -55,4 +55,4 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6

.github/workflows/jekyll.yml

@@ -35,7 +35,7 @@ jobs:
         working-directory: docs
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Setup Ruby
         uses: ruby/setup-ruby@7bae1d00b5db9166f4f0fc47985a3a5702cb58f0 # v1.197.0
         with:

.github/workflows/pr_closed.yaml

@@ -48,7 +48,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@v6
 
       - name: Updating Main Environment
         env:

.github/workflows/release_created.yaml

@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5.0.0
+        uses: actions/checkout@v6
 
       - name: Updating Main Environment
         env:

.github/workflows/scheduled-repository-template-sync.yaml

@@ -16,10 +16,10 @@ jobs:
 
     steps:
     - name: Check out the repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
 
     - name: Check out external repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
       with:
         repository: NHSDigital/nhs-notify-repository-template
         path: nhs-notify-repository-template

.github/workflows/stage-1-commit.yaml

@@ -39,7 +39,7 @@ jobs:
     timeout-minutes: 2
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # Full history is needed to scan all commits
       - name: "Scan secrets"
@@ -50,7 +50,7 @@ jobs:
     timeout-minutes: 2
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # Full history is needed to compare branches
       - name: "Check file format"
@@ -61,7 +61,7 @@ jobs:
     timeout-minutes: 2
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # Full history is needed to compare branches
       - name: "Check Markdown format"
@@ -75,7 +75,7 @@ jobs:
         contents: write
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # Full history is needed to compare branches
       - name: "Check to see if Terraform Docs are up-to-date"
@@ -96,7 +96,7 @@ jobs:
     timeout-minutes: 2
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # Full history is needed to compare branches
       - name: "Check English usage"
@@ -107,7 +107,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # Full history is needed to compare branches
       - name: "Check TODO usage"
@@ -119,7 +119,7 @@ jobs:
       terraform_changed: ${{ steps.check.outputs.terraform_changed }}
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: "Check for Terraform changes"
         id: check
@@ -143,7 +143,7 @@ jobs:
     if: needs.detect-terraform-changes.outputs.terraform_changed == 'true'
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: "Lint Terraform"
         uses: ./.github/actions/lint-terraform
   trivy:
@@ -154,7 +154,7 @@ jobs:
     if: needs.detect-terraform-changes.outputs.terraform_changed == 'true'
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: "Setup ASDF"
         uses: asdf-vm/actions/setup@v4
       - name: "Perform Setup"
@@ -170,7 +170,7 @@ jobs:
     timeout-minutes: 2
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: "Count lines of code"
         uses: ./.github/actions/create-lines-of-code-report
         with:
@@ -189,7 +189,7 @@ jobs:
     timeout-minutes: 2
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: "Scan dependencies"
         uses: ./.github/actions/scan-dependencies
         with:

.github/workflows/stage-2-test.yaml

@@ -39,7 +39,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: "Run unit test suite"
         run: |
           make test-unit
@@ -52,7 +52,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: "Run linting"
         run: |
           make test-lint
@@ -66,7 +66,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: "Run test coverage check"
         run: |
           make test-coverage
@@ -83,7 +83,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # Full history is needed to improving relevancy of reporting
       - name: "Perform static analysis"

.github/workflows/stage-3-build.yaml

@@ -39,7 +39,7 @@ jobs:
     timeout-minutes: 3
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: "Upload artifact"
         uses: actions/upload-artifact@v4