chore(deps): update dependency ts-jest to v26.4.3

Author: renovate-bot

package.json

@@ -47,7 +47,7 @@
     "tslint-config-prettier": "1.18.0",
     "typescript": "4.0.3",
     "typedoc": "0.19.2",
-    "ts-jest": "26.4.0",
+    "ts-jest": "26.4.3",
     "jest": "26.4.2",
     "jest-extended": "0.11.5",
     "regenerator-runtime": "0.13.7",