Bump keras from 2.12.0 to 2.13.1

Bumps [keras](https://github.com/keras-team/keras) from 2.12.0 to 2.13.1.
- [Release notes](https://github.com/keras-team/keras/releases)
- [Commits](keras-team/keras@v2.12.0...v2.13.1)

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

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

requirements.txt

@@ -7,7 +7,7 @@ h3pandas==0.2.6
 itsdangerous==2.1.2
 Jinja2==3.1.4
 keras==2.14.0;python_version>="3.11"
-keras==2.12.0;python_version=="3.8"
+keras==2.13.1;python_version=="3.8"
 matplotlib==3.8.3;python_version>="3.11"
 matplotlib==3.7.5;python_version=="3.8"
 numpy==1.26.4;python_version>="3.11"