chore(deps): update actions/checkout action to v6 (#760)

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

Author: renovate[bot]

.github/workflows/preview-release.yml

@@ -20,7 +20,7 @@ jobs:
       image: node:24
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: pnpm setup
         uses: pnpm/action-setup@v4
       - name: Install packages

.github/workflows/update-docs.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0