Bump fork-ts-checker-webpack-plugin from 6.3.4 to 6.4.0

Bumps [fork-ts-checker-webpack-plugin](https://github.com/TypeStrong/fork-ts-checker-webpack-plugin) from 6.3.4 to 6.4.0.
- [Release notes](https://github.com/TypeStrong/fork-ts-checker-webpack-plugin/releases)
- [Changelog](https://github.com/TypeStrong/fork-ts-checker-webpack-plugin/blob/main/CHANGELOG.md)
- [Commits](TypeStrong/fork-ts-checker-webpack-plugin@v6.3.4...v6.4.0)

---
updated-dependencies:
- dependency-name: fork-ts-checker-webpack-plugin
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]