build(deps-dev): bump terser from 3.17.0 to 4.8.1

Bumps [terser](https://github.com/terser/terser) from 3.17.0 to 4.8.1.
- [Release notes](https://github.com/terser/terser/releases)
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/terser/terser/commits)

---
updated-dependencies:
- dependency-name: terser
  dependency-type: direct:development
...

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

Author: dependabot[bot]

package.json

@@ -110,7 +110,7 @@
     "stylelint": "^9.10.1",
     "stylelint-config-recommended": "^2.1.0",
     "stylelint-scss": "^3.5.3",
-    "terser": "^3.16.1",
+    "terser": "^4.8.1",
     "terser-webpack-plugin": "^1.2.2",
     "ts-node": "^10.9.1",
     "tslint": "^5.12.1",