Bump gradio from 3.1.7 to 3.13.2

Bumps [gradio](https://github.com/gradio-app/gradio) from 3.1.7 to 3.13.2.
- [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/v3.1.7...v3.13.2)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -1,4 +1,4 @@
-gradio==3.1.7
+gradio==3.13.2
 moviepy==1.0.3
 imagehash==4.2.1
 pandas==1.3.5