main.yml in bullet-7.0.1

- old
+ new

@@ -74,9 +74,9 @@
     steps:
     - uses: actions/checkout@v2
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 3.0
+        ruby-version: 3.1
         bundler-cache: true
     - name: Run tests
       run: bundle exec rake