Bump yargs-parser and dts-bundle-generator (#20)

Bumps [yargs-parser](https://github.com/yargs/yargs-parser) to 21.1.1 and updates ancestor dependency [dts-bundle-generator](https://github.com/timocov/dts-bundle-generator). These dependencies need to be updated together.


Updates `yargs-parser` from 9.0.2 to 21.1.1
- [Release notes](https://github.com/yargs/yargs-parser/releases)
- [Changelog](https://github.com/yargs/yargs-parser/blob/main/CHANGELOG.md)
- [Commits](yargs/yargs-parser@v9.0.2...yargs-parser-v21.1.1)

Updates `dts-bundle-generator` from 2.1.0 to 9.5.1
- [Release notes](https://github.com/timocov/dts-bundle-generator/releases)
- [Commits](timocov/dts-bundle-generator@v2.1.0...v9.5.1)

---
updated-dependencies:
- dependency-name: yargs-parser
  dependency-type: indirect
- dependency-name: dts-bundle-generator
  dependency-type: direct:development
...

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