Make ganache run in background.

Author: yaroslavyaroslav

.github/workflows/ci.yml

@@ -38,7 +38,9 @@ jobs:
       - name: Install ganache
         run: npm install ganache --global
       - name: Start ganache
-        run: ganache
+        run: ganache &
+      - name: Wait till ganache starts
+        run: sleep 1
       - name: Run local tests
         run: swift test --skip-build -c debug --filter localTests
   carthage: