Bump jekyll-feed from 0.15.0 to 0.15.1

Bumps [jekyll-feed](https://github.com/jekyll/jekyll-feed) from 0.15.0 to 0.15.1.
- [Release notes](https://github.com/jekyll/jekyll-feed/releases)
- [Changelog](https://github.com/jekyll/jekyll-feed/blob/master/History.markdown)
- [Commits](jekyll/jekyll-feed@v0.15.0...v0.15.1)

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile

@@ -19,7 +19,7 @@ gem "minimal-mistakes-jekyll"
 
 # If you have any plugins, put them here!
 group :jekyll_plugins do
-  gem "jekyll-feed", "~> 0.6"
+  gem "jekyll-feed", "~> 0.15"
   gem 'jekyll-asciidoc'
 end
 

Gemfile.lock

@@ -43,7 +43,7 @@ GEM
     jekyll-asciidoc (3.0.0)
       asciidoctor (>= 1.5.0)
       jekyll (>= 3.0.0)
-    jekyll-feed (0.15.0)
+    jekyll-feed (0.15.1)
       jekyll (>= 3.7, < 5.0)
     jekyll-gist (1.5.0)
       octokit (~> 4.2)
@@ -111,7 +111,7 @@ PLATFORMS
 DEPENDENCIES
   jekyll (~> 4.1.1)
   jekyll-asciidoc
-  jekyll-feed (~> 0.6)
+  jekyll-feed (~> 0.15)
   minimal-mistakes-jekyll
   tzinfo (~> 1.2)
   tzinfo-data