Bump strong_migrations from 1.4.2 to 1.4.3 (#11877)

Bumps [strong_migrations](https://github.com/ankane/strong_migrations) from 1.4.2 to 1.4.3.
- [Release notes](https://github.com/ankane/strong_migrations/releases)
- [Changelog](https://github.com/ankane/strong_migrations/blob/master/CHANGELOG.md)
- [Commits](ankane/strong_migrations@v1.4.2...v1.4.3)

---
updated-dependencies:
- dependency-name: strong_migrations
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -916,7 +916,7 @@ GEM
     ssrf_filter (1.1.1)
     staccato (0.5.3)
     statsd-instrument (3.5.3)
-    strong_migrations (1.4.2)
+    strong_migrations (1.4.3)
       activerecord (>= 5.2)
     super_diff (0.9.0)
       attr_extras (>= 6.2.4)