fix: bump keras from 3.11.3 to 3.12.0

Bumps [keras](https://github.com/keras-team/keras) from 3.11.3 to 3.12.0.
- [Release notes](https://github.com/keras-team/keras/releases)
- [Commits](keras-team/keras@v3.11.3...v3.12.0)

---
updated-dependencies:
- dependency-name: keras
  dependency-version: 3.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -22,9 +22,9 @@ scikit-learn==1.7.2
 
 # Machine Learning Libraries:
 tensorflow==2.20.0
-keras==3.11.3
+keras==3.12.0
 tensorflow==2.20.0
-keras==3.11.3
+keras==3.12.0
 
 
 # Natural Language Processing Libraries: