chore(deps): update dependency ts-jest to v26.4.2

Author: renovate-bot

package-lock.json

@@ -67,7 +67,7 @@
     "rimraf": "3.0.2",
     "sharp": "0.26.2",
     "svgexport": "0.4.1",
-    "ts-jest": "26.4.1",
+    "ts-jest": "26.4.2",
     "ts-loader": "8.0.5",
     "ts-node": "9.0.0",
     "typescript": "4.0.3",