Bump super_diff in the development-dependencies group

Bumps the development-dependencies group with 1 update: [super_diff](https://github.com/splitwise/super_diff).


Updates `super_diff` from 0.14.0 to 0.15.0
- [Release notes](https://github.com/splitwise/super_diff/releases)
- [Changelog](https://github.com/splitwise/super_diff/blob/main/CHANGELOG.md)
- [Commits](splitwise/super_diff@v0.14.0...v0.15.0)

---
updated-dependencies:
- dependency-name: super_diff
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: development-dependencies
...

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

Gemfile.lock

@@ -530,7 +530,7 @@ GEM
     stringio (3.1.2)
     strong_migrations (2.1.0)
       activerecord (>= 6.1)
-    super_diff (0.14.0)
+    super_diff (0.15.0)
       attr_extras (>= 6.2.4)
       diff-lcs
       patience_diff