Update dependency jest to v26.4.0

Author: renovate-bot

package.json

@@ -40,7 +40,7 @@
         "@types/node": "12.12.54",
         "cross-env": "7.0.2",
         "del-cli": "3.0.1",
-        "jest": "26.2.2",
+        "jest": "26.4.0",
         "jest-extended": "0.11.5",
         "prettier": "2.0.5",
         "regenerator-runtime": "0.13.7",