chore(deps): update dependency ts-loader to v7

Author: renovate-bot

package-lock.json

@@ -49,7 +49,7 @@
     "prettier": "2.0.4",
     "rimraf": "3.0.2",
     "style-loader": "1.1.4",
-    "ts-loader": "6.2.2",
+    "ts-loader": "7.0.1",
     "ts-node": "8.8.2",
     "tsconfig-paths": "3.9.0",
     "typescript": "3.8.3",