Bump terser and terser-webpack-plugin (#28)
Bump terser and terser-webpack-plugin (#28)

Bumps [terser](https://github.com/terser/terser) and [terser-webpack-plugin](https://github.com/webpack-contrib/terser-webpack-plugin). These dependencies needed to be updated together.

Updates `terser` from 3.17.0 to 4.8.1
- [Release notes](https://github.com/terser/terser/releases)
- [Changelog](https://github.com/terser/terser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/terser/terser/compare/v3.17.0...v4.8.1)

Updates `terser-webpack-plugin` from 1.2.3 to 1.4.5
- [Release notes](https://github.com/webpack-contrib/terser-webpack-plugin/releases)
- [Changelog](https://github.com/webpack-contrib/terser-webpack-plugin/blob/v1.4.5/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/terser-webpack-plugin/compare/v1.2.3...v1.4.5)

---
updated-dependencies:
- dependency-name: terser
  dependency-type: indirect
- dependency-name: terser-webpack-plugin
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
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