ruby.yml in review-4.2.0

- old
+ new

@@ -12,10 +12,10 @@
         ruby: [2.4, 2.5, 2.6, 2.7]
         os: [ubuntu-latest, macOS-latest]
     steps:
     - uses: actions/checkout@v2
     - name: Set up Ruby
-      uses: eregon/use-ruby-action@master
+      uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}
     - name: fix ImageMagick policy.xml on Linux
       if: runner.os == 'Linux'
       run: sudo sed -i 's/none/read|write/g' /etc/ImageMagick-6/policy.xml