chore(deps): update actions/checkout action to v6 (#312)

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

Author: renovate[bot]

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
         node-version: [18.x, 20.x, 22.x]
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v6
         with:

.github/workflows/release-publish.yml

@@ -16,7 +16,7 @@ jobs:
       NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
           token: ${{ secrets.HC_TOKEN }}