Update dart.yml

Author: mrtnetwork

.github/workflows/dart.yml

@@ -39,7 +39,7 @@ jobs:
       # package:test for this step to succeed. Note that Flutter projects will
       # want to change this to 'flutter test'.
       - name: Run tests Web
-        run: dart test ./test -p chrome --timeout=2000s
+        run: dart test ./test -p chrome --timeout=20m -c dart2wasm
       - name: Run tests
         run: dart test ./test