Bump webpack from 4.43.0 to 5.34.0 in /www

Bumps [webpack](https://github.com/webpack/webpack) from 4.43.0 to 5.34.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](https://github.com/webpack/webpack/compare/v4.43.0...v5.34.0)

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

www/package.json

@@ -32,7 +32,7 @@
   "devDependencies": {
     "copy-webpack-plugin": "^6.4.1",
     "hello-wasm-pack": "^0.1.0",
-    "webpack": "^4.29.3",
+    "webpack": "^5.34.0",
     "webpack-cli": "^4.6.0",
     "webpack-dev-server": "^3.1.5"
   }