Bump ts-loader from 8.0.17 to 8.0.18

Bumps [ts-loader](https://github.com/TypeStrong/ts-loader) from 8.0.17 to 8.0.18.
- [Release notes](https://github.com/TypeStrong/ts-loader/releases)
- [Changelog](https://github.com/TypeStrong/ts-loader/blob/master/CHANGELOG.md)
- [Commits](TypeStrong/ts-loader@v8.0.17...v8.0.18)

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -55,7 +55,7 @@
     "eslint": "^7.21.0",
     "glob": "^7.1.6",
     "mocha": "^8.3.1",
-    "ts-loader": "^8.0.17",
+    "ts-loader": "^8.0.18",
     "ts-node": "^9.1.1",
     "typescript": "^4.2.3",
     "vscode-test": "^1.5.1",