Rubocop: target Ruby 2.4

.rubocop.yml

@@ -1,6 +1,6 @@
 AllCops:
   DisplayCopNames: true
-  TargetRubyVersion: 2.3
+  TargetRubyVersion: 2.4
   Exclude:
     - vendor/**/*
     - bin/**/*

lib/bundler_git_source_patch.rb

@@ -11,7 +11,7 @@ class GitProxy
         # Instead, we convert all `git@github.com:` URLs to use HTTPS.
         def configured_uri_for(uri)
           uri = uri.gsub("git@github.com:", "https://github.com/")
-          if /https?:/ =~ uri
+          if uri.match?(/https?:/)
             remote = URI(uri)
             config_auth =
               Bundler.settings[remote.to_s] || Bundler.settings[remote.host]

lib/dependabot/pull_request_creator.rb

@@ -100,7 +100,7 @@ def create_branch(commit)
       )
     rescue Octokit::UnprocessableEntity => error
       # Return quietly in the case of a race
-      return nil if error.message =~ /Reference already exists/
+      return nil if error.message.match?(/Reference already exists/)
       raise
     end
 

lib/dependabot/pull_request_updater.rb

@@ -90,7 +90,7 @@ def update_branch(commit)
       )
     rescue Octokit::UnprocessableEntity => error
       # Return quietly if the branch has been deleted
-      return nil if error.message =~ /Reference does not exist/
+      return nil if error.message.match?(/Reference does not exist/)
       raise
     end