chore(deps): Bump golang.org/x/tools from 0.19.0 to 0.20.0 in /hack

Bumps [golang.org/x/tools](https://github.com/golang/tools) from 0.19.0 to 0.20.0.
- [Release notes](https://github.com/golang/tools/releases)
- [Commits](golang/tools@v0.19.0...v0.20.0)

---
updated-dependencies:
- dependency-name: golang.org/x/tools
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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