build(deps-dev): bump ts-jest from 26.5.4 to 26.5.6 (#277)

Author: dependabot[bot]

package-lock.json

@@ -68,7 +68,7 @@
     "reflect-metadata": "0.1.13",
     "rimraf": "3.0.2",
     "socket.io-client": "^2.4.0",
-    "ts-jest": "^26.5.4",
+    "ts-jest": "^26.5.6",
     "ts-node": "^10.0.0",
     "typedi": "^0.10.0",
     "typescript": "^4.3.2"