Fix dep issue conda create env for glumpy

Previously, running `conda create env` with the environment.yaml file
generates ModuleNotFoundError for Cython even though Cython is listed
just before glumpy in pip dependency list. Increasing glumpy version
solves this issue.

Author: Toefinder

environment.yaml

@@ -45,7 +45,7 @@ dependencies:
       - pypng==0.0.20
       - PyOpenGL==3.1.0
       - Cython==0.29.21
-      - glumpy==1.1.0
+      - glumpy==1.2.0
       - ipdb==0.12.3
       - colorama==0.4.3
       - scikit-video==1.1.11