Bump ex_doc from 0.29.4 to 0.30.1
Bumps [ex_doc](https://github.com/elixir-lang/ex_doc) from 0.29.4 to 0.30.1.
- [Changelog](https://github.com/elixir-lang/ex_doc/blob/main/CHANGELOG.md)
- [Commits](https://github.com/elixir-lang/ex_doc/compare/v0.29.4...v0.30.1)
---
updated-dependencies:
- dependency-name: ex_doc
dependency-type: direct:development
update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>