Bump terser from 5.14.1 to 5.21.0 (#137)

Bumps [terser](https://github.com/terser/terser) from 5.14.1 to 5.21.0.
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](terser/terser@v5.14.1...v5.21.0)

---
updated-dependencies:
- dependency-name: terser
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

yarn.lock

@@ -1802,13 +1802,6 @@
   version "1.1.2"
   resolved "https://registry.npmjs.org/@jridgewell/set-array/-/set-array-1.1.2.tgz"
 
-"@jridgewell/source-map@^0.3.2":
-  version "0.3.2"
-  resolved "https://registry.npmjs.org/@jridgewell/source-map/-/source-map-0.3.2.tgz"
-  dependencies:
-    "@jridgewell/gen-mapping" "^0.3.0"
-    "@jridgewell/trace-mapping" "^0.3.9"
-
 "@jridgewell/source-map@^0.3.3":
   version "0.3.5"
   resolved "https://registry.yarnpkg.com/@jridgewell/source-map/-/source-map-0.3.5.tgz#a3bb4d5c6825aab0d281268f47f6ad5853431e91"
@@ -2352,7 +2345,7 @@ acorn-walk@^8.0.0:
   version "8.2.0"
   resolved "https://registry.npmjs.org/acorn-walk/-/acorn-walk-8.2.0.tgz"
 
-acorn@^8.0.4, acorn@^8.5.0:
+acorn@^8.0.4:
   version "8.7.1"
   resolved "https://registry.npmjs.org/acorn/-/acorn-8.7.1.tgz"
 
@@ -6380,16 +6373,7 @@ terser-webpack-plugin@^5.3.7:
     serialize-javascript "^6.0.1"
     terser "^5.16.8"
 
-terser@^5.10.0, terser@^5.7.2:
-  version "5.14.1"
-  resolved "https://registry.npmjs.org/terser/-/terser-5.14.1.tgz"
-  dependencies:
-    "@jridgewell/source-map" "^0.3.2"
-    acorn "^8.5.0"
-    commander "^2.20.0"
-    source-map-support "~0.5.20"
-
-terser@^5.16.8:
+terser@^5.10.0, terser@^5.16.8, terser@^5.7.2:
   version "5.21.0"
   resolved "https://registry.yarnpkg.com/terser/-/terser-5.21.0.tgz#d2b27e92b5e56650bc83b6defa00a110f0b124b2"
   dependencies: