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

Author: renovate[bot]

.github/workflows/changesets.yml

@@ -39,7 +39,7 @@ jobs:
         with:
           app-id: ${{ secrets.ECOSCRIPT_APP_ID }}
           private-key: ${{ secrets.ECOSCRIPT_APP_PRIVATE_KEY }}
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
         with:
           fetch-depth: 0
           # Uses generated token to allow pushing commits back

.github/workflows/format.yml

@@ -20,7 +20,7 @@ jobs:
     if: github.repository_owner == 'portabletext'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v6
         with: