chore(deps): update actions/checkout action to v6 (#33)

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

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

@@ -21,7 +21,7 @@ jobs:
         java: [ '17', '21' ]
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-java@v5
         with:

.github/workflows/test-testdata.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
 
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - uses: actions/setup-node@v6
       with: