chore(ui renderer tests): update to support new ora dependency

Ora has always expected a stream, but it wasn't necessary to provide one during tests since the stream dependency was never used. Now that Ora has proper support for smaller consoles, the stream needs to be (at the very least) an Object.

Author: vikaspotluri123

test/unit/ui/renderer-spec.js

@@ -58,7 +58,9 @@ describe('Unit: UI > Renderer', function () {
         it('subscribes to events', function (done) {
             const ctx = {
                 subscribeToEvents: sinon.stub(),
-                ui: {},
+                ui: {
+                    stdout: {}
+                },
                 options: {},
                 frame: sinon.stub()
             };