run tests in parallel in CI

.github/workflows/build-and-test.yml

@@ -40,7 +40,7 @@ jobs:
       - name: Create DB
         run: bundle exec rake db:test:prepare
       - name: Run tests
-        run: bundle exec rake
+        run: bundle exec rake parallel:spec
       - name: Install javascript dependencies
         run: yarn install
       - name: Run javascript tests

scripts/ship-it.sh

@@ -4,4 +4,4 @@ set -eux
 
 git rev-parse --show-toplevel
 
-bundle exec rake && yarn test && git push
+bundle exec rake parallel:spec && yarn test && git push