Bump actions/checkout from 5 to 6 (#1491)

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>

Author: dependabot[bot]

.github/workflows/codeql-analysis.yml

@@ -20,7 +20,7 @@ jobs:
         language: [ 'csharp' ]
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - uses: actions/setup-dotnet@v5
       with:
         dotnet-version: '10.0.x'

.github/workflows/spms-dotnet.yml

@@ -17,7 +17,7 @@ jobs:
         ports:
         - 27017:27017
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-dotnet@v5
         with:
           dotnet-version: '10.0.x'
@@ -56,7 +56,7 @@ jobs:
      runs-on: ubuntu-24.04
      if: github.event_name == 'push'
      steps:
-       - uses: actions/checkout@v5
+       - uses: actions/checkout@v6
        - name: Login to Docker Hub
          uses: docker/login-action@v3
          with: