Update core library versions

Author: talmo

Diff for: requirements.txt

@@ -1,18 +1,18 @@
-numpy>=1.18.1,<1.19.0
-attrs==19.3
-cattrs==1.0.0rc
+numpy==1.19.5
+attrs==21.2.0
+cattrs==1.8.0
 jsonpickle==1.2
 networkx
-tensorflow==2.3.1
-h5py==2.10.0
+tensorflow==2.7.0
+h5py==3.1.0
 python-rapidjson
-opencv-python-headless==4.2.0.34
+opencv-python-headless==4.1.2.30
 pandas
 psutil
-PySide2==5.14.1
+PySide2==5.15.2
 pyzmq
 pyyaml
-imgaug==0.3.0
+imgaug==0.4.0
 scipy<=1.4.1
 scikit-image
 scikit-learn