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/build.yml

@@ -33,7 +33,7 @@ jobs:
 
     steps:
     - name: Check out code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Set up JDK 17
       uses: actions/setup-java@v5

.github/workflows/code-formatting.yml

@@ -21,7 +21,7 @@ jobs:
 
     steps:
     - name: Check out code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Set up JDK
       uses: actions/setup-java@v5

.github/workflows/codeql-analysis.yml

@@ -21,7 +21,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - uses: actions/setup-java@v5
       with:

.github/workflows/coverage.yml

@@ -19,7 +19,7 @@ jobs:
 
     steps:
     - name: Check out code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Set up JDK
       uses: actions/setup-java@v5
@@ -48,7 +48,7 @@ jobs:
         sed "s/{shortcommit}/${GITHUB_SHA:0:8}/g;s/{commit}/${GITHUB_SHA}/g;s#{repo}#${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}#g" .github/workflows/coverage/index.html.template > build/gh-pages/index.html
 
     - name: Check out GitHub Pages branch
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         ref: gh-pages
         clean: false

.github/workflows/integration-test.yml

@@ -26,7 +26,7 @@ jobs:
 
     steps:
     - name: Check out code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
 
     - name: Set up JDK ${{ matrix.java }}
       uses: actions/setup-java@v5

.github/workflows/release-verify-signatures.yml

@@ -44,7 +44,7 @@ jobs:
 
     steps:
     - name: check out code
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
       with:
         ref: ${{ github.ref_name }}