build.yml in mopti-0.2.2

- old
+ new

@@ -9,12 +9,13 @@
       matrix:
         ruby: [ '2.6', '2.7', '3.0' ]
     steps:
       - uses: actions/checkout@v2
       - name: Set up Ruby
-        uses: actions/setup-ruby@v1
+        uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true
       - name: Build and test with Rake
         run: |
           gem install bundler
           bundle install --jobs 4 --retry 3
           bundle exec rake