Update dependency jest to v26

Author: renovate-bot

package.json

@@ -33,7 +33,7 @@
     "@eweilow/ts-jest-fork": "24.0.1-test",
     "@types/jest": "24.0.17",
     "@types/supertest": "2.0.8",
-    "jest": "24.8.0",
+    "jest": "26.1.0",
     "lerna": "3.16.4",
     "prettier": "1.18.2",
     "supertest": "4.0.2",