cypress: Bump number of test retries to migitate flakiness on Jenkins

cypress.config.js

@@ -31,7 +31,7 @@ module.exports = defineConfig({
     SKIP_SLOW_TESTS: 1
   },
   retries: {
-    runMode: 4
+    runMode: 6
   },
   hmrUrl: 'ws://127.0.0.1:3000/ws',
   hmrRestartDelay: 5000,