Bump src/main/resources/csl-styles from d9ca259 to af6f50b (JabRe…

…f#11240)

Bumps [src/main/resources/csl-styles](https://github.com/citation-style-language/styles) from `d9ca259` to `af6f50b`.
- [Release notes](https://github.com/citation-style-language/styles/releases)
- [Commits](citation-style-language/styles@d9ca259...af6f50b)

---
updated-dependencies:
- dependency-name: src/main/resources/csl-styles
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>