chore(deps): update actions/checkout action to v4 (#92)

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

Author: renovate[bot]

.github/workflows/buildifier.yaml

@@ -14,6 +14,6 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: buildifier
         run: bazel run --enable_bzlmod //.github/workflows:buildifier.check