Bump recaptcha from 5.14.0 to 5.15.0

Bumps [recaptcha](https://github.com/ambethia/recaptcha) from 5.14.0 to 5.15.0.
- [Changelog](https://github.com/ambethia/recaptcha/blob/master/CHANGELOG.md)
- [Commits](ambethia/recaptcha@v5.14.0...v5.15.0)

---
updated-dependencies:
- dependency-name: recaptcha
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -457,7 +457,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    recaptcha (5.14.0)
+    recaptcha (5.15.0)
     redis (5.0.7)
       redis-client (>= 0.9.0)
     redis-client (0.15.0)