Bump terser-webpack-plugin from 5.3.8 to 5.3.9

Bumps [terser-webpack-plugin](https://github.com/webpack-contrib/terser-webpack-plugin) from 5.3.8 to 5.3.9.
- [Release notes](https://github.com/webpack-contrib/terser-webpack-plugin/releases)
- [Changelog](https://github.com/webpack-contrib/terser-webpack-plugin/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v5.3.8...v5.3.9)

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

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

package.json

@@ -47,7 +47,7 @@
         "reflect-metadata": "^0.1.13",
         "replace-in-file-webpack-plugin": "^1.0.6",
         "shelljs": "^0.8.5",
-        "terser-webpack-plugin": "^5.3.8",
+        "terser-webpack-plugin": "^5.3.9",
         "tfx-cli": "^0.14.0",
         "trim-newlines": ">=5.0.0",
         "ts-loader": "^9.4.2",