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

Author: renovate[bot]

.github/workflows/ci.yml

@@ -11,7 +11,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install pnpm
         uses: pnpm/action-setup@v4

.github/workflows/release-tag.yml

@@ -13,7 +13,7 @@ jobs:
       contents: write # for yyx990803/release-tag to create a release tag
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Create Release for Tag
         id: release_tag
         uses: yyx990803/release-tag@master