Bump copy-webpack-plugin from 5.1.2 to 6.4.1 in /www

Bumps [copy-webpack-plugin](https://github.com/webpack-contrib/copy-webpack-plugin) from 5.1.2 to 6.4.1.
- [Release notes](https://github.com/webpack-contrib/copy-webpack-plugin/releases)
- [Changelog](https://github.com/webpack-contrib/copy-webpack-plugin/blob/v6.4.1/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/copy-webpack-plugin/compare/v5.1.2...v6.4.1)

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

www/package.json

@@ -30,7 +30,7 @@
     "wasm-dna-transcription-translation": "file:../pkg"
   },
   "devDependencies": {
-    "copy-webpack-plugin": "^5.0.0",
+    "copy-webpack-plugin": "^6.4.1",
     "hello-wasm-pack": "^0.1.0",
     "webpack": "^4.29.3",
     "webpack-cli": "^4.6.0",