Update docker compose command

Author: aidanharan

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Build docker images
-        run: docker-compose build --build-arg TARGET_VERSION=${{ matrix.ruby }}
+        run: docker compose build --build-arg TARGET_VERSION=${{ matrix.ruby }}
 
       - name: Run tests
-        run: docker-compose run ci
+        run: docker compose run ci