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

Author: renovate[bot]

.github/workflows/release-github.yml

@@ -12,7 +12,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: cucumber/[email protected]
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/release-npm.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     environment: Release
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: actions/setup-node@v6
         with:
           node-version: '24.x'

.github/workflows/test-javascript.yml

@@ -28,7 +28,7 @@ jobs:
     steps:
     - name: set git core.autocrlf to 'input'
       run: git config --global core.autocrlf input
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
     - name: with Node.js ${{ matrix.node-version }} on ${{ matrix.os }}
       uses: actions/setup-node@v6
       with: