use new rubyaction and 3.0 version, cache gems

.github/workflows/update.yml

@@ -13,14 +13,10 @@ jobs:
 
       - uses: actions/checkout@v2
 
-      - uses: actions/setup-ruby@v1
-
+      - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
-
-      - run: |
-          gem install bundler
-          bundle install --jobs 4 --retry 3
+          ruby-version: 3.0
+          bundler-cache: true
 
       - run: |
           rm -v data/options.json