bundle install fix

.github/workflows/test.yml

@@ -27,7 +27,7 @@ jobs:
           ruby-version: '2.4.x'
           
       - name: Set up Bundler
-        run: gem install bundler -v "~> 2.0"
+        run: gem install bundler -v "~> 1.17"
           
       - run: ruby --version
       - run: gem --version

Gemfile

-# frozen_string_literal: true
-
 source "https://rubygems.org"
 
-git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
-
 gem "jekyll", "~> 4.0"
 
 group :jekyll_plugins do