Lock keras version.

Author: tymorrow

pyproject.toml

@@ -61,6 +61,7 @@ dependencies = [
     "scikit-learn                   ==1.5.*",   # 3.9 - 3.12
     "scipy                          ==1.13.*",  # >= 3.10
     "seaborn                        ==0.13.*",  # >= 3.8
+    "keras                          ==3.8.0",
     "tensorflow                     ==2.16.*",  # 3.9 - 3.12
     "tensorflow-model-optimization  ==0.8.*",   # 3.7 - 3.12
     "onnx                           ==1.16.1",  # 3.7 - 3.10