Bump googleapis/code-suggester from 2 to 4 (#745)

Bumps [googleapis/code-suggester](https://github.com/googleapis/code-suggester) from 2 to 4.
- [Release notes](https://github.com/googleapis/code-suggester/releases)
- [Changelog](https://github.com/googleapis/code-suggester/blob/main/CHANGELOG.md)
- [Commits](https://github.com/googleapis/code-suggester/compare/v2...v4)

---
updated-dependencies:
- dependency-name: googleapis/code-suggester
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/formatting.yml

@@ -50,7 +50,7 @@ jobs:
 
     - name: Create pull request
       if: failure()
-      uses: googleapis/code-suggester@v2
+      uses: googleapis/code-suggester@v4
       with:
         command: review
         pull_number: ${{ github.event.pull_request.number }}
@@ -92,7 +92,7 @@ jobs:
 
     - name: Create pull request
       if: failure()
-      uses: googleapis/code-suggester@v2
+      uses: googleapis/code-suggester@v4
       with:
         command: review
         pull_number: ${{ github.event.pull_request.number }}
@@ -139,7 +139,7 @@ jobs:
 
     - name: Create pull request
       if: failure()
-      uses: googleapis/code-suggester@v2
+      uses: googleapis/code-suggester@v4
       with:
         command: review
         pull_number: ${{ github.event.pull_request.number }}