Bump gradio from 3.23.0 to 3.34.0 in /projects/powerpaint

Bumps [gradio](https://github.com/gradio-app/gradio) from 3.23.0 to 3.34.0.
- [Release notes](https://github.com/gradio-app/gradio/releases)
- [Changelog](https://github.com/gradio-app/gradio/blob/main/CHANGELOG.md)
- [Commits](gradio-app/gradio@v3.23.0...v3.34.0)

---
updated-dependencies:
- dependency-name: gradio
  dependency-type: direct:production
...

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

projects/powerpaint/requirements.txt

@@ -1,6 +1,6 @@
 controlnet-aux==0.0.3
 diffusers==0.23.1
-gradio==3.23.0
+gradio==3.34.0
 mmengine
 opencv-python
 torch