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

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>

Author: dependabot[bot]

.github/workflows/ci-cd.yml

@@ -20,7 +20,7 @@ jobs:
 
       - name: Checkout repository
         id: checkout_repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           fetch-depth: 0
@@ -41,7 +41,7 @@ jobs:
     name: Validate Project for Trimming
     runs-on: windows-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Setup .NET
         uses: actions/setup-dotnet@v5
@@ -58,7 +58,7 @@ jobs:
     needs: [ci]
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup .NET
         uses: actions/setup-dotnet@v5

.github/workflows/codeql-analysis.yml

@@ -20,7 +20,7 @@ jobs:
     steps:
       - name: Checkout repository
         id: checkout_repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Setup .NET
         uses: actions/setup-dotnet@v5

.github/workflows/release-please-gha.yml

@@ -25,7 +25,7 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Generate GitHub App token
         id: app-token

.github/workflows/sonarcloud.yml

@@ -43,7 +43,7 @@ jobs:
         uses: actions/setup-dotnet@v5
         with:
           dotnet-version: 8.0.x
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
       - name: Cache SonarCloud packages