fix use_line_collection error

requirements.txt

@@ -24,7 +24,7 @@ xxhash
 wurlitzer; platform_system != 'Windows'
 
 # Plotting
-matplotlib>=3.8.2
+matplotlib<3.8.0 #stem(..., use_line_collection=False) is no longer supported. 
 scikit-plot>=0.3.7
 # yellowbrick<=1.5, have conflict with recent matplotlib by use_line_collection error
 # should use yellowbrick>1.5 when fixed (https://github.com/DistrictDataLabs/yellowbrick/issues/1312)