Bump terser from 5.39.0 to 5.39.2

Bumps [terser](https://github.com/terser/terser) from 5.39.0 to 5.39.2.
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](terser/terser@v5.39.0...v5.39.2)

---
updated-dependencies:
- dependency-name: terser
  dependency-version: 5.39.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -86,7 +86,7 @@
 		"grunt-terser": "^2.0.0",
 		"grunt-version": "^3.0.1",
 		"stylelint-config-standard": "^38.0.0",
-		"terser": "^5.39.0"
+		"terser": "^5.39.2"
 	},
 	"dependencies": {
 		"@jaames/iro": "^5.5.2",