Bump webmock from 3.3.0 to 3.4.2 (#8874)

Bumps [webmock](https://github.com/bblimke/webmock) from 3.3.0 to 3.4.2.
- [Release notes](https://github.com/bblimke/webmock/releases)
- [Changelog](https://github.com/bblimke/webmock/blob/master/CHANGELOG.md)
- [Commits](https://github.com/bblimke/webmock/compare/v3.3.0...v3.4.2)

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

Gemfile.lock

@@ -630,7 +630,7 @@ GEM
     uniform_notifier (1.11.0)
     warden (1.2.7)
       rack (>= 1.0)
-    webmock (3.3.0)
+    webmock (3.4.2)
       addressable (>= 2.3.6)
       crack (>= 0.3.2)
       hashdiff
@@ -765,7 +765,7 @@ DEPENDENCIES
   tty-prompt (~> 0.17)
   twitter-text (~> 1.14)
   tzinfo-data (~> 1.2018)
-  webmock (~> 3.3)
+  webmock (~> 3.4)
   webpacker (~> 3.5)
   webpush