Bump jekyll-mentions from 1.5.1 to 1.6.0
Bump jekyll-mentions from 1.5.1 to 1.6.0

Bumps [jekyll-mentions](https://github.com/jekyll/jekyll-mentions) from 1.5.1 to 1.6.0.
- [Release notes](https://github.com/jekyll/jekyll-mentions/releases)
- [Changelog](https://github.com/jekyll/jekyll-mentions/blob/master/History.markdown)
- [Commits](https://github.com/jekyll/jekyll-mentions/compare/v1.5.1...v1.6.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
pixyzehn/pixyzehn.github.io,pixyzehn/pixyzehn.github.io,pixyzehn/pixyzehn.github.io