Bump recaptcha from 5.16.0 to 5.18.0

Bumps [recaptcha](https://github.com/ambethia/recaptcha) from 5.16.0 to 5.18.0.
- [Changelog](https://github.com/ambethia/recaptcha/blob/master/CHANGELOG.md)
- [Commits](ambethia/recaptcha@v5.16.0...v5.18.0)

---
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

@@ -472,7 +472,7 @@ GEM
     rb-inotify (0.11.1)
       ffi (~> 1.0)
     rchardet (1.8.0)
-    recaptcha (5.16.0)
+    recaptcha (5.18.0)
     regexp_parser (2.8.2)
     responders (3.1.1)
       actionpack (>= 5.2)