macos.yml in metanorma-mpfa-0.4.1

- old
+ new

@@ -27,10 +27,9 @@
       - uses: actions/checkout@master
       - name: Use Ruby
         uses: actions/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby }}
-          architecture: 'x64'
       - name: Update gems
         run: |
           sudo gem install bundler --force
           bundle install --jobs 4 --retry 3
       - name: Run specs