Bump ts-loader from 7.0.5 to 8.0.0

Bumps [ts-loader](https://github.com/TypeStrong/ts-loader) from 7.0.5 to 8.0.0.
- [Release notes](https://github.com/TypeStrong/ts-loader/releases)
- [Changelog](https://github.com/TypeStrong/ts-loader/blob/master/CHANGELOG.md)
- [Commits](https://github.com/TypeStrong/ts-loader/compare/v7.0.5...v8.0.0)

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

package.json

@@ -47,7 +47,7 @@
         "replace-in-file-webpack-plugin": "^1.0.6",
         "terser-webpack-plugin": "^3.0.6",
         "tfx-cli": "^0.8.1",
-        "ts-loader": "^7.0.5",
+        "ts-loader": "^8.0.0",
         "typescript": "^3.9.6",
         "webpack": "^4.43.0",
         "webpack-cli": "^3.3.12"