Update dependency ts-loader to v8 (#3521)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

integration/firestore/package.json

@@ -26,7 +26,7 @@
     "karma-mocha": "2.0.1",
     "karma-spec-reporter": "0.0.32",
     "mocha": "7.2.0",
-    "ts-loader": "6.2.2",
+    "ts-loader": "8.0.3",
     "typescript": "3.9.7",
     "webpack": "4.44.1",
     "webpack-stream": "5.2.1"

package.json

@@ -144,7 +144,7 @@
     "sinon-chai": "3.5.0",
     "source-map-loader": "1.0.1",
     "terser": "4.8.0",
-    "ts-loader": "6.2.2",
+    "ts-loader": "8.0.3",
     "ts-node": "8.10.2",
     "tslint": "6.1.3",
     "typedoc": "0.16.11",

yarn.lock

@@ -14663,10 +14663,10 @@ ts-essentials@7.0.0:
   resolved "https://registry.npmjs.org/ts-essentials/-/ts-essentials-7.0.0.tgz#eb807945d65e258bae8914f541543758f879f6c5"
   integrity sha512-DptrzFAwb5afnsTdKxfScHqLbVZHl7YsxvDT+iT8tbXWFGSzbXALhfWlal25HBesqlX0NZd6wz9KBGnJcWScdQ==
 
-ts-loader@6.2.2:
-  version "6.2.2"
-  resolved "https://registry.npmjs.org/ts-loader/-/ts-loader-6.2.2.tgz#dffa3879b01a1a1e0a4b85e2b8421dc0dfff1c58"
-  integrity sha512-HDo5kXZCBml3EUPcc7RlZOV/JGlLHwppTLEHb3SHnr5V7NXD4klMEkrhJe5wgRbaWsSXi+Y1SIBN/K9B6zWGWQ==
+ts-loader@8.0.3:
+  version "8.0.3"
+  resolved "https://registry.npmjs.org/ts-loader/-/ts-loader-8.0.3.tgz#56858f4296edf1ed55e01f8520552984d3f0911c"
+  integrity sha512-wsqfnVdB7xQiqhqbz2ZPLGHLPZbHVV5Qn/MNFZkCFxRU1miDyxKORucDGxKtsQJ63Rfza0udiUxWF5nHY6bpdQ==
   dependencies:
     chalk "^2.3.0"
     enhanced-resolve "^4.0.0"