Bump ua-parser-js and @11ty/eleventy

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


Removes `ua-parser-js`

Updates `@11ty/eleventy` from 1.0.2 to 2.0.0
- [Release notes](https://github.com/11ty/eleventy/releases)
- [Changelog](https://github.com/11ty/eleventy/blob/master/docs/release-instructions.md)
- [Commits](11ty/eleventy@v1.0.2...v2.0.0)

---
updated-dependencies:
- dependency-name: ua-parser-js
  dependency-type: indirect
- dependency-name: "@11ty/eleventy"
  dependency-type: direct:development
...

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