Bump keras from 3.9.0 to 3.9.1

Bumps [keras](https://github.com/keras-team/keras) from 3.9.0 to 3.9.1.
- [Release notes](https://github.com/keras-team/keras/releases)
- [Commits](keras-team/keras@v3.9.0...v3.9.1)

---
updated-dependencies:
- dependency-name: keras
  dependency-version: 3.9.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements_with_versions.txt

@@ -41,7 +41,7 @@ tornado==6.4.2
 obs==0.0.0
 todo==0.1
 oauth2client==4.1.3
-keras==3.9.0
+keras==3.9.1
 pymongo==4.11.3
 playsound==1.3.0
 pyttsx3==2.98