Merge pull request #28 from bioinformatics-ua/chore/update-2022

Update learning pack - general maintenance

Gemfile

@@ -3,19 +3,19 @@ source "https://rubygems.org"
 require 'json'
 require 'open-uri'
 
-gem "jekyll-theme-slate"
+gem "jekyll-theme-slate", "~> 0.2.0"
 
 # If you want to use GitHub Pages, remove the "gem "jekyll"" above and
 # uncomment the line below. To upgrade, run `bundle update github-pages`.
-versions = JSON.parse(open('https://pages.github.com/versions.json').read)
-gem "github-pages", versions['github-pages'], group: :jekyll_plugins
+gem "github-pages", "~> 228", group: :jekyll_plugins
 
 # If you have any plugins, put them here!
 group :jekyll_plugins do
-   gem "jekyll-github-metadata", "~> 2.12.1"
-#   gem "jekyll-feed", "~> 0.6"
+   gem "jekyll-github-metadata", "~> 2.13.0"
 end
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
 gem 'tzinfo-data', platforms: [:mingw, :mswin, :x64_mingw, :jruby]
 
+# So that it can be served locally with Ruby 3
+gem "webrick", "~> 1.8"