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/cd.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout current branch
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Install Python 3.13
         uses: actions/setup-python@v6

.github/workflows/pr.yml

@@ -8,7 +8,7 @@ jobs:
       src_changed: ${{ steps.filter.outputs.src }}
     steps:
       - name: Checkout current branch
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Check the Src folder for changes
         uses: dorny/paths-filter@v3
@@ -32,7 +32,7 @@ jobs:
     steps:
 
       - name: Checkout current branch
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -81,12 +81,12 @@ jobs:
     steps:
 
       - name: Checkout current branch
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           path: pr
 
       - name: Checkout main
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           ref: refs/heads/main
           path: main

.github/workflows/sbom.yml

@@ -24,7 +24,7 @@ jobs:
       contents: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v5        
+        uses: actions/checkout@v6        
 
       - name: Setup Python 3.13
         uses: actions/setup-python@v6