Disable package:cupertino_http tests because they are failing at head (#940)

Author: brianquinlan

.github/workflows/cupertino.yml

@@ -45,7 +45,7 @@ jobs:
   test:
     # Test package:cupertino_http use flutter integration tests.
     needs: analyze
-    name: "Build and test"
+    name: "Build and test (disabled!)"
     runs-on: macos-latest
     defaults:
       run:
@@ -61,4 +61,6 @@ jobs:
           # pins version 1.21.1 or later of 'package:test'
           channel: 'master'
       - name: Run tests
-        run: flutter test integration_test/
+        # TODO: Renable tests when https://github.com/dart-lang/http/issues/938
+        # is fixed.
+        run: echo flutter test integration_test/