Bump webpack in /datafusion/wasmtest/datafusion-wasm-app (apache#12236)

Bumps [webpack](https://github.com/webpack/webpack) from 5.88.2 to 5.94.0.
- [Release notes](https://github.com/webpack/webpack/releases)
- [Commits](webpack/webpack@v5.88.2...v5.94.0)

---
updated-dependencies:
- dependency-name: webpack
  dependency-type: direct:development
...

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