build(deps): bump github.com/mattn/go-colorable from 0.1.14 to 0.1.15

Bumps [github.com/mattn/go-colorable](https://github.com/mattn/go-colorable) from 0.1.14 to 0.1.15.
- [Commits](https://github.com/mattn/go-colorable/compare/v0.1.14...v0.1.15)

---
updated-dependencies:
- dependency-name: github.com/mattn/go-colorable
  dependency-version: 0.1.15
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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