Update dependency ts-loader to v9

Author: renovate[bot]

integration/firestore/package.json

@@ -29,7 +29,7 @@
     "karma-mocha": "2.0.1",
     "karma-spec-reporter": "0.0.34",
     "mocha": "9.2.2",
-    "ts-loader": "8.4.0",
+    "ts-loader": "9.4.2",
     "typescript": "4.2.2",
     "webpack": "4.46.0",
     "webpack-stream": "6.1.2"

package.json

@@ -145,7 +145,7 @@
     "sinon-chai": "3.7.0",
     "source-map-loader": "1.1.3",
     "terser": "5.16.1",
-    "ts-loader": "8.4.0",
+    "ts-loader": "9.4.2",
     "ts-node": "10.9.1",
     "tslint": "6.1.3",
     "typedoc": "0.16.11",