Update dependency jest to v27

Author: renovate-bot

package.json

@@ -33,7 +33,7 @@
     "@types/iconv": "2.1.16",
     "@types/iconv-lite": "0.0.1",
     "@types/jest": "26.0.5",
-    "jest": "24.7.1",
+    "jest": "27.0.4",
     "prettier": "1.19.1",
     "ts-jest": "24.3.0",
     "typescript": "3.9.2"