Bump terser from 5.1.0 to 5.2.1

Bumps [terser](https://github.com/terser/terser) from 5.1.0 to 5.2.1.
- [Release notes](https://github.com/terser/terser/releases)
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/terser/terser/compare/v5.1.0...v5.2.1)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

yarn.lock

@@ -7570,9 +7570,9 @@ teeny-request@6.0.1:
     uuid "^3.3.2"
 
 terser@^5.0.0:
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/terser/-/terser-5.1.0.tgz#1f4ab81c8619654fdded51f3157b001e1747281d"
-  integrity sha512-pwC1Jbzahz1ZPU87NQ8B3g5pKbhyJSiHih4gLH6WZiPU8mmS1IlGbB0A2Nuvkj/LCNsgIKctg6GkYwWCeTvXZQ==
+  version "5.2.1"
+  resolved "https://registry.yarnpkg.com/terser/-/terser-5.2.1.tgz#40b971b8d28b4fe98c9e8c0d073ab48e7bb96cd8"
+  integrity sha512-/AOtjRtAMNGO0fIF6m8HfcvXTw/2AKpsOzDn36tA5RfhRdeXyb4RvHxJ5Pah7iL6dFkLk+gOnCaNHGwJPl6TrQ==
   dependencies:
     commander "^2.20.0"
     source-map "~0.6.1"