Merge pull request #4769 from backstage/dependabot/npm_and_yarn/ts-loader-8.0.17

chore(deps): bump ts-loader from 7.0.4 to 8.0.17

packages/cli/package.json

@@ -106,7 +106,7 @@
     "tar": "^6.0.1",
     "terser-webpack-plugin": "^1.4.3",
     "ts-jest": "^26.4.3",
-    "ts-loader": "^7.0.4",
+    "ts-loader": "^8.0.17",
     "typescript": "^4.0.3",
     "url-loader": "^4.1.0",
     "webpack": "^4.41.6",