Bump sqren/backport-github-action from 8.9.7 to 9.3.0 (#242)

Bumps [sqren/backport-github-action](https://github.com/sqren/backport-github-action) from 8.9.7 to 9.3.0.
- [Release notes](https://github.com/sqren/backport-github-action/releases)
- [Commits](sorenlouv/backport-github-action@v8.9.7...v9.3.0)

---
updated-dependencies:
- dependency-name: sqren/backport-github-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/backport.yml

@@ -18,7 +18,7 @@ jobs:
       )
     steps:
       - name: Backport
-        uses: sqren/backport-github-action@v8.9.7
+        uses: sqren/backport-github-action@v9.3.0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           auto_backport_label_prefix: backport-to-