Bump jekyll-feed to v0.16.0

[hubot]

Release: https://github.com/jekyll/jekyll-feed/releases/tag/v0.16.0 Diff: https://github.com/jekyll/jekyll-feed/compare/v0.15.1...v0.16.0

[parkr]

@yoannchaudet Hi! We have a couple small fixes from the jekyll org coming your way. One is this, and another is from jekyll-seo-tag! If you wouldn't mind scheduling in shipping these changes sometime soon, we'd be eternally grateful! ❤️😊 I think a '.pages bump jekyll-seo-tag 2.8.0' should add a PR for the second gem :)

[sylhare]

Hello when should we be expecting it?

[mohd-akram]

Would be great to have this merged. This closes #844.

[mohd-akram]

Any update on this? @tsusdere