chore(deps-dev): bump ts-loader from 6.2.2 to 7.0.4

Bumps [ts-loader](https://github.com/TypeStrong/ts-loader) from 6.2.2 to 7.0.4.
- [Release notes](https://github.com/TypeStrong/ts-loader/releases)
- [Changelog](https://github.com/TypeStrong/ts-loader/blob/master/CHANGELOG.md)
- [Commits](TypeStrong/ts-loader@v6.2.2...v7.0.4)

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

packages/graphin-studio/package.json

@@ -45,7 +45,7 @@
     "rimraf": "^3.0.0",
     "source-map-loader": "^0.2.4",
     "style-loader": "^1.0.0",
-    "ts-loader": "^6.1.2",
+    "ts-loader": "^7.0.4",
     "typescript": "^3.6.4",
     "webpack": "^4.41.0",
     "webpack-bundle-analyzer": "^3.6.0",