Bump terser-webpack-plugin from 5.3.9 to 5.3.15

Bumps [terser-webpack-plugin](https://github.com/webpack/terser-webpack-plugin) from 5.3.9 to 5.3.15.
- [Release notes](https://github.com/webpack/terser-webpack-plugin/releases)
- [Changelog](https://github.com/webpack/terser-webpack-plugin/blob/main/CHANGELOG.md)
- [Commits](webpack/terser-webpack-plugin@v5.3.9...v5.3.15)

---
updated-dependencies:
- dependency-name: terser-webpack-plugin
  dependency-version: 5.3.15
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]