chore(deps): bump peter-evans/find-comment from 3 to 4

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
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/mkdocs.yml

@@ -59,7 +59,7 @@ jobs:
             --site=${{ vars.NETLIFY_PREVIEW_APP_SITE_ID }}
 
       - name: Find existing comment
-        uses: peter-evans/find-comment@v3
+        uses: peter-evans/find-comment@v4
         id: find-comment
         with:
           issue-number: ${{ github.event.number }}