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](lautis/uglifier@v4.2.0...v4.2.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -182,7 +182,7 @@ GEM
     ethon (0.16.0)
       ffi (>= 1.15.0)
     eventmachine (1.2.7)
-    execjs (2.8.1)
+    execjs (2.10.0)
     factory_bot (6.2.1)
       activesupport (>= 5.0.0)
     factory_bot_rails (6.2.0)
@@ -505,7 +505,7 @@ GEM
       ethon (>= 0.9.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    uglifier (4.2.0)
+    uglifier (4.2.1)
       execjs (>= 0.3.0, < 3)
     unaccent (0.4.0)
     underscore-rails (1.8.3)