Update dependency ts-loader to v9.2.6

Author: renovate-bot

package-lock.json

@@ -71,7 +71,7 @@
     "rimraf": "3.0.2",
     "supertest": "6.1.3",
     "ts-jest": "26.5.6",
-    "ts-loader": "9.1.2",
+    "ts-loader": "9.2.6",
     "ts-node": "9.1.1",
     "tsconfig-paths": "3.9.0",
     "tslint": "6.1.3",