Upgrade github_changelog_generator to 1.15.0.pre.beta

ferrarimarco · ferrarimarco · commit 6180869acac0 · 2018-07-18T07:54:47.000Z
diff --git a/Gemfile b/Gemfile
@@ -1,4 +1,4 @@
 source 'https://rubygems.org' do
   gem 'bundler', '1.16.2'
-  gem 'github_changelog_generator', '1.15.0.pre.alpha'
+  gem 'github_changelog_generator', '1.15.0.pre.beta'
 end
