[CHANGE] Run tests in parallel

Author: dioKaratzas

.github/workflows/CI.yml

@@ -37,7 +37,7 @@ jobs:
       run: swift build
 
     - name: Tests
-      run: swift test
+      run: swift test --parallel
 
   test_linux:
     needs: [run_lint, test_macos]
@@ -59,4 +59,4 @@ jobs:
       run: swift build
 
     - name: Tests
-      run: swift test
+      run: swift test --parallel