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@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
       - uses: cucumber/action-create-github-release@v1.1.1
         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.yaml

@@ -32,7 +32,7 @@ jobs:
     steps:
       - name: set git core.autocrlf to 'input'
         run: git config --global core.autocrlf input
-      - uses: actions/checkout@93cb6efe18208431cddfb8368fd83d5badbf9bfd # v5
+      - uses: actions/checkout@1af3b93b6815bc44a9784bd300feb67ff0d1eeb3 # v6
       - name: with Node.js ${{ matrix.node-version }} on ${{ matrix.os }}
         uses: actions/setup-node@v6
         with: