Bump terser from 1.2.2 to 1.2.3

Bumps [terser](https://github.com/ahorek/terser-ruby) from 1.2.2 to 1.2.3.
- [Release notes](https://github.com/ahorek/terser-ruby/releases)
- [Changelog](https://github.com/ahorek/terser-ruby/blob/master/CHANGELOG.md)
- [Commits](ahorek/terser-ruby@1.2.2...1.2.3)

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

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

Gemfile.lock

@@ -327,7 +327,7 @@ GEM
       sprockets (>= 3.0.0)
     stringio (3.1.0)
     strscan (3.1.0)
-    terser (1.2.2)
+    terser (1.2.3)
       execjs (>= 0.3.0, < 3)
     thor (1.3.1)
     tilt (2.3.0)