Bump uglifier from 4.2.0 to 4.2.1

Bumps [uglifier](https://github.com/lautis/uglifier) from 4.2.0 to 4.2.1.
- [Changelog](https://github.com/lautis/uglifier/blob/master/CHANGELOG.md)
- [Commits](https://github.com/lautis/uglifier/compare/v4.2.0...v4.2.1)

---
updated-dependencies:
- dependency-name: uglifier
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -105,7 +105,7 @@ GEM
     docile (1.1.5)
     e2mmap (0.1.0)
     erubi (1.13.0)
-    execjs (2.8.1)
+    execjs (2.10.0)
     factory_bot (6.4.6)
       activesupport (>= 5.0.0)
     factory_bot_rails (6.4.3)
@@ -327,7 +327,7 @@ GEM
       rails (>= 3.1)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    uglifier (4.2.0)
+    uglifier (4.2.1)
       execjs (>= 0.3.0, < 3)
     unicode-display_width (2.6.0)
     uniform_notifier (1.16.0)