Build(deps-dev): Bump terser from 5.19.4 to 5.20.0 (#39240)

Bumps [terser](https://github.com/terser/terser) from 5.19.4 to 5.20.0.
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/terser/terser/compare/v5.19.4...v5.20.0)

---
updated-dependencies:
- dependency-name: terser
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -150,7 +150,7 @@
     "shelljs": "^0.8.5",
     "stylelint": "^15.10.3",
     "stylelint-config-twbs-bootstrap": "^11.0.1",
-    "terser": "^5.19.4",
+    "terser": "^5.20.0",
     "vnu-jar": "23.4.11"
   },
   "files": [