Update planetscale/ghcommit-action action to v0.2.20 (#1822)

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

Author: renovate[bot]

.github/workflows/lint.yml

@@ -118,7 +118,7 @@ jobs:
         env:
           GITHUB_TOKEN: '${{ secrets.RSG_BOT_TOKEN }}'
         if: "contains('${{ steps.commit-message.outputs.message }}', 'Automatically linting code')"
-        uses: planetscale/ghcommit-action@v0.2.19
+        uses: planetscale/ghcommit-action@v0.2.20
         with:
           commit_message: 'Automatically linting code'
           repo: '${{ github.repository }}'