Bump gradio from 5.11.0 to 6.7.0

Bumps [gradio](https://github.com/gradio-app/gradio) from 5.11.0 to 6.7.0.
- [Release notes](https://github.com/gradio-app/gradio/releases)
- [Changelog](https://github.com/gradio-app/gradio/blob/main/CHANGELOG.md)
- [Commits](https://github.com/gradio-app/gradio/compare/gradio@5.11.0...gradio@6.7.0)

---
updated-dependencies:
- dependency-name: gradio
  dependency-version: 6.7.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -53,7 +53,7 @@ redis==5.0.0
 
 # --- GUI Frameworks ---
 panel==1.3.0
-gradio==5.11.0
+gradio==6.7.0
 streamlit==1.40.0
 
 # --- Data Visualization ---