(maint) This is a stop-gap for a breakign octokit change

Due to octokit/octokit.rb#1392, the changelog
generator cannot authenticate properly, which means that it rate limits
almost instantly and takes many hours to generate a changelog. This
should be reverted when that issue is resolved.

Author: binford2k

Gemfile

@@ -26,6 +26,7 @@ group :development do
   gem "puppet-module-win-dev-r#{minor_version}", '~> 1.0',       require: false, platforms: [:mswin, :mingw, :x64_mingw]
   gem "github_changelog_generator",                              require: false
   gem "ruby-pwsh",                                               require: false
+  gem "octokit",  "= 4.21.0"
 end
 group :system_tests do
   gem "puppet-module-posix-system-r#{minor_version}", '~> 1.0', require: false, platforms: [:ruby]