Bump webpack from 5.26.2 to 5.26.3

Bumps [webpack](https://github.com/webpack/webpack) from 5.26.2 to 5.26.3.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v5.26.2...v5.26.3)

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

package.json

@@ -49,7 +49,7 @@
         "tfx-cli": "^0.8.3",
         "ts-loader": "^8.0.18",
         "typescript": "^4.2.3",
-        "webpack": "^5.26.2",
+        "webpack": "^5.26.3",
         "webpack-cli": "^4.5.0"
     }
 }