chore(deps): update dependency ts-jest to v26.4.1

package.json

@@ -47,7 +47,7 @@
     "rollup": "2.28.2",
     "rollup-plugin-dts": "1.4.13",
     "rollup-plugin-uglify": "6.0.4",
-    "ts-jest": "26.4.0",
+    "ts-jest": "26.4.1",
     "ts-node": "9.0.0",
     "typescript": "4.0.3"
   }