Disabled bubble test (#11630)

superset-frontend/cypress-base/cypress/integration/explore/visualizations/bubble.test.js

@@ -60,7 +60,7 @@ describe('Visualization > Bubble', () => {
   // Number of circles are pretty unstable when there are a lot of circles
   // Since main functionality is already covered in fitler test below,
   // skip this test untill we find a solution.
-  it('should work', () => {
+  it.skip('should work', () => {
     cy.visitChartByParams(JSON.stringify(BUBBLE_FORM_DATA)).then(() => {
       cy.wait('@getJson').then(xhr => {
         let expectedBubblesNumber = 0;