Bump actions/checkout from 6 to 7

.github/workflows/ci.yaml

@@ -13,21 +13,21 @@ jobs:
   darwin-arm64:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - run: brew install --build-from-source Formula/buf.rb
       - run: buf --version
   darwin-x86_64:
     runs-on: macos-15-intel
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - run: brew install --build-from-source Formula/buf.rb
       - run: buf --version
   # Linux arm64 is not supported by Homebrew:
   # https://docs.brew.sh/Homebrew-on-Linux#arm-unsupported
   linux-x86_64:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Setup Homebrew
         uses: Homebrew/actions/setup-homebrew@main
       - run: brew install --build-from-source Formula/buf.rb

.github/workflows/create-release-pr.yaml

@@ -25,7 +25,7 @@ jobs:
           app-id: ${{ env.APP_ID }}
           private-key: ${{ secrets.TOKEN_EXCHANGE_GH_APP_PRIVATE_KEY }}
       - name: Checkout repository code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           token: ${{ steps.app_token.outputs.token }}
       - name: Update Buf

.github/workflows/sync-master.yaml

@@ -10,7 +10,7 @@ jobs:
     if: github.event.pull_request.merged == true && startsWith(github.event.pull_request.head.ref, 'release') && github.base_ref == 'main'
     steps:
       - name: Checkout repository code
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           fetch-depth: 0
           token: ${{ secrets.GITHUB_TOKEN }}