Bump terser from 5.18.2 to 5.19.0

Bumps [terser](https://github.com/terser/terser) from 5.18.2 to 5.19.0.
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](terser/terser@v5.18.2...v5.19.0)

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

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

Author: dependabot[bot]

package-lock.json

@@ -81,7 +81,7 @@
 		"grunt-htmllint": "^0.3.0",
 		"grunt-terser": "^2.0.0",
 		"grunt-version": "^3.0.0",
-		"terser": "^5.18.2"
+		"terser": "^5.19.0"
 	},
 	"dependencies": {
 		"@jaames/iro": "^5.5.2",