Use bundler cache in CI

.github/workflows/test.yml

@@ -28,8 +28,7 @@ jobs:
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
-      - name: Install dependencies
-        run: bundle install
+          bundler-cache: true
       - name: Run tests
         run: bundle exec rspec
 
@@ -56,6 +55,7 @@ jobs:
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
       - name: Startup MySQL
         run: |
           sudo systemctl start mysql.service
@@ -63,8 +63,6 @@ jobs:
         run: |
           mysql --user=root --password=root --host=127.0.0.1 -e 'create database ransack collate utf8_general_ci;';
           mysql --user=root --password=root --host=127.0.0.1 -e 'use ransack;show variables like "%character%";show variables like "%collation%";';
-      - name: Install dependencies
-        run: bundle install
       - name: Run tests
         run: bundle exec rspec
 
@@ -107,11 +105,10 @@ jobs:
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
       - name: Setup databases
         run: |
           psql -h localhost -p 5432 -W postgres -c 'create database ransack;' -U postgres;
-      - name: Install dependencies
-        run: bundle install
       - name: Run tests
         run: bundle exec rspec
 
@@ -123,8 +120,7 @@ jobs:
         uses: ruby/setup-ruby@v1
         with:
           ruby-version: 3.1.2
-      - name: Install dependencies
-        run: bundle install
+          bundler-cache: true
       - name: Run bug report templates
         run: |
           ruby bug_report_templates/test-ransacker-arel-present-predicate.rb