build(deps-dev): bump ts-loader from 8.0.17 to 8.0.18 (#830)

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>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

packages/workers/package.json

@@ -26,6 +26,6 @@
     "@types/node": "12",
     "@types/node-cache": "^4.2.5",
     "@types/node-fetch": "^2.5.8",
-    "ts-loader": "^8.0.17"
+    "ts-loader": "^8.0.18"
   }
 }

yarn.lock

@@ -20749,10 +20749,10 @@ ts-essentials@^2.0.3:
   resolved "https://registry.yarnpkg.com/ts-essentials/-/ts-essentials-2.0.12.tgz#c9303f3d74f75fa7528c3d49b80e089ab09d8745"
   integrity sha512-3IVX4nI6B5cc31/GFFE+i8ey/N2eA0CZDbo6n0yrz0zDX8ZJ8djmU1p+XRz7G3is0F3bB3pu2pAroFdAWQKU3w==
 
-ts-loader@^8.0.17:
-  version "8.0.17"
-  resolved "https://registry.yarnpkg.com/ts-loader/-/ts-loader-8.0.17.tgz#98f2ccff9130074f4079fd89b946b4c637b1f2fc"
-  integrity sha512-OeVfSshx6ot/TCxRwpBHQ/4lRzfgyTkvi7ghDVrLXOHzTbSK413ROgu/xNqM72i3AFeAIJgQy78FwSMKmOW68w==
+ts-loader@^8.0.18:
+  version "8.0.18"
+  resolved "https://registry.yarnpkg.com/ts-loader/-/ts-loader-8.0.18.tgz#b2385cbe81c34ad9f997915129cdde3ad92a61ea"
+  integrity sha512-hRZzkydPX30XkLaQwJTDcWDoxZHK6IrEMDQpNd7tgcakFruFkeUp/aY+9hBb7BUGb+ZWKI0jiOGMo0MckwzdDQ==
   dependencies:
     chalk "^4.1.0"
     enhanced-resolve "^4.0.0"