chore(deps): bump actions/checkout from 5 to 6 (#1871)

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...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>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Bruno Verachten <gounthar@gmail.com>

Author: dependabot[bot]

.github/workflows/anchore.yml

@@ -32,7 +32,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out the code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Build the Docker image
         run: cd ./dockerfiles/ && docker build . --file Dockerfile --tag localbuild/testimage:latest

.github/workflows/github-docker-registry-push.yml

@@ -35,7 +35,7 @@ jobs:
 
       - name: Checkout
         # This step checks out the repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 

.github/workflows/hadolint.yml

@@ -30,7 +30,7 @@ jobs:
       actions: read # only required for a private repository by github/codeql-action/upload-sarif to get the Action run status
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Run hadolint scanning on the controller Dockerfile
         uses: hadolint/hadolint-action@2332a7b74a6de0dda2e2221d575162eba76ba5e5

.github/workflows/plugin_update.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Configure git & gh
         run: |

.github/workflows/test-jenkins.yml

@@ -23,7 +23,7 @@ jobs:
       BRANCH_SUFFIX: clean-up
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0  # Fetch all history for all branches and tags.
 
@@ -269,7 +269,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Set up and start Docker Compose
         run: |

.github/workflows/updatecli.yaml

@@ -19,7 +19,7 @@ jobs:
     steps:
       # This step checks out the repository using the checkout action
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       # This step installs Updatecli in the runner using the updatecli-action
       - name: Install Updatecli in the runner