Update to Pillow 11.x only for Python 3.9+

Author: mathoudebine

requirements.txt

@@ -1,5 +1,4 @@
 # Python packages requirements
-Pillow~=11.0.0         # Image generation
 pyserial~=3.5          # Serial link to communicate with the display
 PyYAML~=6.0.2          # For themes files
 psutil~=6.1.0          # CPU / disk / network metrics
@@ -10,6 +9,10 @@ sv-ttk~=2.6.0          # Tk Sun Valley theme for configuration editor
 tkinter-tooltip~=3.1.2 # Tooltips for configuration editor
 uptime~=3.0.1          # For System Uptime 
 
+# Image generation
+Pillow~=10.4.0; python_version < "3.9"    # For Python 3.8 max.
+Pillow~=11.0.0; python_version >= "3.9"  # For Python >=3.9
+
 # Efficient image serialization
 numpy~=1.24.4; python_version < "3.9"   # For Python 3.8 max.
 numpy~=2.0.0; python_version == "3.9"  # For Python 3.9, only numpy 2.0.x is supported as 2.1 only supports Python >=3.10