Pin Cypress version (#4284)

Author: arikfr

package.json

@@ -16,7 +16,7 @@
     "lint:ci": "npm run lint -- --format junit --output-file /tmp/test-results/eslint/results.xml",
     "test": "TZ=Africa/Khartoum jest",
     "test:watch": "jest --watch",
-    "cypress:install": "npm install --no-save cypress@^3.1.5 @percy/cypress@^0.2.3 [email protected]",
+    "cypress:install": "npm install --no-save cypress@3.4.1 @percy/cypress@^0.2.3 [email protected]",
     "cypress": "node client/cypress/cypress.js"
   },
   "repository": {