Bump @types/update-notifier from 6.0.5 to 6.0.8

Bumps [@types/update-notifier](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/update-notifier) from 6.0.5 to 6.0.8.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/update-notifier)

---
updated-dependencies:
- dependency-name: "@types/update-notifier"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]