update requirements

requirements.txt

@@ -2,9 +2,11 @@ numpy==1.19.1
 pandas==1.1.3
 matplotlib==3.3.1
 opencv-python==4.1.2.30
-tensorflow==2.1.0
+tensorflow==2.4.1
 seaborn==0.11.0
 scikit-learn==0.23.2
 vega_datasets==0.8.0
 mrcnn==0.2
-altair==4.1.0
\ No newline at end of file
+altair==4.1.0
+selenium==3.141.0
+pillow==8.0.0