Bump peter-evans/find-comment from 3 to 4 (#720)

Bumps [peter-evans/find-comment](https://github.com/peter-evans/find-comment) from 3 to 4.
- [Release notes](https://github.com/peter-evans/find-comment/releases)
- [Commits](peter-evans/find-comment@v3...v4)

---
updated-dependencies:
- dependency-name: peter-evans/find-comment
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/generate_comment.yml

@@ -19,7 +19,7 @@ jobs:
     steps:
       - name: Find existing comment
         id: find-comment
-        uses: peter-evans/find-comment@v3
+        uses: peter-evans/find-comment@v4
         with:
           issue-number: ${{ github.event.workflow_run.pull_requests[0].number }}
           comment-author: "github-actions[bot]"