Bump ratex-parser from 0.1.9 to 0.1.11

Bumps [ratex-parser](https://github.com/erweixin/RaTeX) from 0.1.9 to 0.1.11.
- [Release notes](https://github.com/erweixin/RaTeX/releases)
- [Commits](erweixin/RaTeX@v0.1.9...v0.1.11)

---
updated-dependencies:
- dependency-name: ratex-parser
  dependency-version: 0.1.11
  dependency-type: direct:production
...

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Author: dependabot[bot]