Bump nextra-theme-docs from 2.13.4 to 3.0.2

Bumps [nextra-theme-docs](https://github.com/shuding/nextra) from 2.13.4 to 3.0.2.
- [Release notes](https://github.com/shuding/nextra/releases)
- [Commits](https://github.com/shuding/nextra/compare/[email protected]@3.0.2)

---
updated-dependencies:
- dependency-name: nextra-theme-docs
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>