Update octokit to allow Ruby 3.x

JonRowe · JonRowe · commit 3f40099d0306 · 2021-07-12T12:26:58.000+01:00
diff --git a/Gemfile b/Gemfile
@@ -2,4 +2,4 @@ source "https://rubygems.org"
 
 gem "rake", "~> 12.3.2"
 gem "thor", "~> 0.14.6"
-gem "octokit", "~> 2.7"
+gem "octokit", "~> 4.2"
