chore(deps): update actions/checkout action to v6 (#370)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/dotnet-pipeline.yml

@@ -23,7 +23,7 @@ jobs:
       contents: read
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: '0'
 
@@ -51,7 +51,7 @@ jobs:
       matrix:
         os: [ win-x64, osx-x64, linux-x64, linux-musl-x64 ]
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: '0'
       - name: Setup .NET Core SDK 9
@@ -75,7 +75,7 @@ jobs:
     # only deploy if on main or tag
     if: startsWith(github.ref, 'refs/tags/') || github.ref == 'refs/heads/main'
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Login to Docker Registry
         uses: docker/login-action@v3
         with:

.github/workflows/gh-pages-deploy.yml

@@ -19,7 +19,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - uses: actions/setup-node@v6

.github/workflows/gh-pages-test.yml

@@ -18,7 +18,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - uses: actions/setup-node@v6

.github/workflows/sonar.yml

@@ -23,7 +23,7 @@ jobs:
         with:
           java-version: 17
           distribution: 'zulu' # Alternative distribution options are available.
-      - 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