Update dependency ts-jest to v27.0.6

Author: renovate-bot

package.json

@@ -38,7 +38,7 @@
     "@types/jest": "27.0.2",
     "jest": "27.2.5",
     "jest-fetch-mock": "3.0.3",
-    "ts-jest": "27.0.5",
+    "ts-jest": "27.0.6",
     "tslint": "6.1.3",
     "typedoc": "0.19.2",
     "typedoc-plugin-external-module-name": "4.0.5",