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

Author: renovate[bot]

.github/workflows/release-github.yaml

@@ -12,7 +12,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: cucumber/action-create-github-release@v1.1.1
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/release-mvn.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     environment: Release
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-java@v5
         with:
           distribution: 'temurin'

.github/workflows/test-java.yml

@@ -29,7 +29,7 @@ jobs:
         java: ['17', '21']
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-java@v5
         with:
           distribution: 'temurin'
@@ -41,7 +41,7 @@ jobs:
   test-java-pittest:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-java@v5
         with:
           distribution: 'temurin'

.github/workflows/test-testdata.yml

@@ -20,7 +20,7 @@ jobs:
   test-testdata-compatibility-kit:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-node@v6
         with:
           cache: 'npm'
@@ -39,7 +39,7 @@ jobs:
   test-testdata-json-schema:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-node@v6
         with:
           cache: 'npm'