update theme in Gemfile

Gemfile

@@ -7,15 +7,12 @@ source "https://rubygems.org"
 #
 #     bundle exec jekyll serve
 #
-# This will help ensure the proper Jekyll version is running.
-# Happy Jekylling!
-gem "jekyll", "~> 3.8.5"
-gem "bundler", "> 1.16.1"
 
-# This is the default theme for new Jekyll sites. You may change this to anything you like.
+gem "jekyll", "~> 4.0"
+gem "bundler", "> 2.0"
+
 gem "minima", "~> 2.5"
-gem 'jekyll-theme-primer', '~> 0.5.3'
-gem 'jekyll-theme-lcsb-default', '~> 0.2.23', :git => "https://git-r3lab.uni.lu/core-services/jekyll-theme-lcsb-default.git", :branch => "master"
+gem 'jekyll-theme-lcsb-default', '~> 0.3'
 
 # If you want to use GitHub Pages, remove the "gem "jekyll"" above and
 # uncomment the line below. To upgrade, run `bundle update github-pages`.
@@ -23,9 +20,18 @@ gem 'jekyll-theme-lcsb-default', '~> 0.2.23', :git => "https://git-r3lab.uni.lu/
 
 # If you have any plugins, put them here!
 group :jekyll_plugins do
- gem "jekyll-paginate-v2", "~> 1.7"
- gem "jekyll-feed", "~> 0.6"
- gem "jekyll-email-protect"
+ gem "jekyll-paginate-v2",
+     "~> 2",
+     :git => "https://github.com/sverrirs/jekyll-paginate-v2.git"
+
+ gem "jekyll-feed",
+     "~> 0.6"
+
+ gem 'jekyll-theme-lcsb-frozen-components',
+     '~> 0.0.1',
+     :git => "https://git-r3lab.uni.lu/core-services/jekyll-theme-lcsb-frozen-components.git",
+     :branch => "master"
+
 end
 
 # Windows does not include zoneinfo files, so bundle the tzinfo-data gem
@@ -33,3 +39,4 @@ gem "tzinfo-data", platforms: [:mingw, :mswin, :x64_mingw, :jruby]
 
 # Performance-booster for watching directories on Windows
 gem "wdm", "~> 0.1.1" if Gem.win_platform?
+