Should resolve https://github.com/intersystems-community/vscode-objectscript/security/dependabot/4

Author: gjsjohnmurray

docs/Gemfile

@@ -12,7 +12,7 @@ source "https://rubygems.org"
 # gem "just-the-docs"
 # If you want to use GitHub Pages, remove the "gem "jekyll"" above and
 # uncomment the line below. To upgrade, run `bundle update github-pages`.
-gem "github-pages", group: :jekyll_plugins
+gem "github-pages", ">= 224", group: :jekyll_plugins
 # If you have any plugins, put them here!
 gem "kramdown", ">= 2.3.1"
 # group :jekyll_plugins do