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)
- [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/codeql.yml

@@ -68,7 +68,7 @@ jobs:
             # yamllint enable rule:line-length
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL

.github/workflows/dotnet-coverage.yml

@@ -23,7 +23,7 @@ jobs:
         os: ["windows-2025"]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup .NET
         uses: actions/setup-dotnet@v5
         with:

.github/workflows/dotnet-lint.yml

@@ -24,7 +24,7 @@ jobs:
         dotnet-version: [8.x, 9.x]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup .NET ${{ matrix.dotnet-version }}
         uses: actions/setup-dotnet@v5
         with:

.github/workflows/dotnet-test.yml

@@ -24,7 +24,7 @@ jobs:
         dotnet-version: [8.x, 9.x]
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Setup .NET ${{ matrix.dotnet-version }}
         uses: actions/setup-dotnet@v5
         with:

.github/workflows/sonarcloud.yml

@@ -19,7 +19,7 @@ jobs:
           java-version: 21
           # Alternative distribution options are available.
           distribution: "temurin"
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           # Shallow clones should be disabled for a better relevancy of analysis
           fetch-depth: 0