build(deps): Bump actions/checkout from 5.0.1 to 6.0.0

Bumps [actions/checkout](https://github.com/actions/checkout) from 5.0.1 to 6.0.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5.0.1...v6.0.0)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/codeql-analysis.yml

@@ -38,7 +38,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v5.0.1
+      uses: actions/checkout@v6.0.0
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL

.github/workflows/markdown-link-check.yml

@@ -21,7 +21,7 @@ jobs:
 
     steps:
     - name: "Checkout"
-      uses: actions/checkout@v5.0.1
+      uses: actions/checkout@v6.0.0
 
     - name: 'Readme analysis'
       uses: gaurav-nelson/github-action-markdown-link-check@v1

.github/workflows/publish.yml

@@ -21,7 +21,7 @@ jobs:
 
     steps:
     - name: "Checkout"
-      uses: actions/checkout@v5.0.1
+      uses: actions/checkout@v6.0.0
       with:
         fetch-depth: 0
         persist-credentials: false

.github/workflows/release.yml

@@ -19,7 +19,7 @@ jobs:
 
     steps:
     - name: "Checkout"
-      uses: actions/checkout@v5.0.1
+      uses: actions/checkout@v6.0.0
       with:
         fetch-depth: 0
         persist-credentials: false

.github/workflows/sonarcloud-and-mutations.yml

@@ -45,7 +45,7 @@ jobs:
 
     steps:
     - name: "Checkout"
-      uses: actions/checkout@v5.0.1
+      uses: actions/checkout@v6.0.0
       with:
         fetch-depth: 0  # Shallow clones should be disabled for a better relevancy of analysis
 

.github/workflows/tests.yml

@@ -34,7 +34,7 @@ jobs:
 
     steps:
     - name: "Checkout"
-      uses: actions/checkout@v5.0.1
+      uses: actions/checkout@v6.0.0
 
     - name: "Setup .NET"
       uses: actions/setup-dotnet@v5.0.0

.github/workflows/vulnerability-check.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
     - name: "Checkout"
-      uses: actions/checkout@v5.0.1
+      uses: actions/checkout@v6.0.0
 
     - name: "Setup .NET"
       uses: actions/setup-dotnet@v5.0.0