Bump typescript from 4.1.3 to 4.1.5 (#333)

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 4.1.3 to 4.1.5.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](https://github.com/Microsoft/TypeScript/compare/v4.1.3...v4.1.5)

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

package.json

@@ -48,7 +48,7 @@
         "terser-webpack-plugin": "^5.1.1",
         "tfx-cli": "^0.8.3",
         "ts-loader": "^8.0.17",
-        "typescript": "^4.1.3",
+        "typescript": "^4.1.5",
         "webpack": "^5.21.2",
         "webpack-cli": "^4.5.0"
     }