build(deps-dev): bump @saithodev/semantic-release-backmerge

Bumps [@saithodev/semantic-release-backmerge](https://github.com/saitho/semantic-release-backmerge) from 3.2.0 to 3.2.1.
- [Release notes](https://github.com/saitho/semantic-release-backmerge/releases)
- [Changelog](https://github.com/saitho/semantic-release-backmerge/blob/master/CHANGELOG.md)
- [Commits](https://github.com/saitho/semantic-release-backmerge/compare/v3.2.0...v3.2.1)

---
updated-dependencies:
- dependency-name: "@saithodev/semantic-release-backmerge"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -26,7 +26,7 @@
     "@commitlint/config-conventional": "^17.7.0",
     "@octokit/rest": "^20.0.1",
     "@octokit/types": "^6.41.0",
-    "@saithodev/semantic-release-backmerge": "^3.2.0",
+    "@saithodev/semantic-release-backmerge": "^3.2.1",
     "@semantic-release/changelog": "^6.0.3",
     "@semantic-release/commit-analyzer": "^10.0.1",
     "@semantic-release/git": "^10.0.1",