Bump typescript from 4.0.2 to 4.0.3

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 4.0.2 to 4.0.3.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](https://github.com/Microsoft/TypeScript/compare/v4.0.2...v4.0.3)

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

package.json

@@ -48,7 +48,7 @@
         "terser-webpack-plugin": "^4.2.1",
         "tfx-cli": "^0.8.3",
         "ts-loader": "^8.0.3",
-        "typescript": "^4.0.2",
+        "typescript": "^4.0.3",
         "webpack": "^4.44.2",
         "webpack-cli": "^3.3.12"
     }