chore(deps): update actions/checkout action to v7

Author: yanamichan[bot]

.github/workflows/run-renovate.yml

@@ -22,7 +22,7 @@ jobs:
           private-key: ${{ secrets.PRIVATE_KEY }}
 
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       - name: Renovate
         uses: renovatebot/github-action@v46.1.14

.github/workflows/test-build.yml

@@ -8,7 +8,7 @@ jobs:
     if: startsWith(github.head_ref, 'renovate/')
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: denoland/setup-deno@v2
         with:
           deno-version: v2.x