Bump keras from 2.13.1 to 3.9.0

Bumps [keras](https://github.com/keras-team/keras) from 2.13.1 to 3.9.0.
- [Release notes](https://github.com/keras-team/keras/releases)
- [Commits](keras-team/keras@v2.13.1...v3.9.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -12,7 +12,7 @@ scikit-learn==1.5.0
 
 # Bibliotecas para machine learning
 tensorflow==2.11.1
-keras==2.13.1
+keras==3.9.0
 
 # Bibliotecas para web scraping
 beautifulsoup4==4.10.0