Bump pug-code-gen and @11ty/eleventy

Removes [pug-code-gen](https://github.com/pugjs/pug). It's no longer used after updating ancestor dependency [@11ty/eleventy](https://github.com/11ty/eleventy). These dependencies need to be updated together.


Removes `pug-code-gen`

Updates `@11ty/eleventy` from 0.10.0 to 3.0.0
- [Release notes](https://github.com/11ty/eleventy/releases)
- [Changelog](https://github.com/11ty/eleventy/blob/main/docs/release-instructions.md)
- [Commits](11ty/eleventy@v0.10.0...v3.0.0)

---
updated-dependencies:
- dependency-name: pug-code-gen
  dependency-type: indirect
- dependency-name: "@11ty/eleventy"
  dependency-type: direct:development
...

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

Author: dependabot[bot]