Bump webpack from 4.42.0 to 4.42.1

Bumps [webpack](https://github.com/webpack/webpack) from 4.42.0 to 4.42.1.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v4.42.0...v4.42.1)

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

package.json

@@ -49,7 +49,7 @@
         "tfx-cli": "^0.7.11",
         "ts-loader": "^6.2.2",
         "typescript": "^3.8.3",
-        "webpack": "^4.42.0",
+        "webpack": "^4.42.1",
         "webpack-cli": "^3.3.11"
     }
 }