Separate keras and tensorflow

Author: ahmedfgad

.github/workflows/main.yml

@@ -48,7 +48,9 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           pip install -r requirements.txt
-          pip install keras tensorflow torch
+          pip install tensorflow
+          pip install --upgrade keras
+          pip install torch
 
       # Build the PyGAD package distribution (generating .tar.gz and .whl files).
       # This ensures the package build process is valid on this Python version.