Bump keras from 2.11.0 to 3.9.0

Bumps [keras](https://github.com/keras-team/keras) from 2.11.0 to 3.9.0.
- [Release notes](https://github.com/keras-team/keras/releases)
- [Commits](keras-team/keras@v2.11.0...v3.9.0)

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

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

Author: dependabot[bot]

requirements.txt

@@ -31,7 +31,7 @@ incremental==22.10.0
 isort==5.12.0
 Jinja2==3.1.2
 joblib==1.2.0
-keras==2.11.0
+keras==3.9.0
 kiwisolver==1.4.4
 klein==21.8.0
 lazy-object-proxy==1.9.0