Update .gitpod.Dockerfile

Author: tommygonzaleza

.gitpod.Dockerfile

@@ -4,4 +4,4 @@ FROM gitpod/workspace-full:latest
 USER gitpod
 
 RUN pip3 install pytest==4.4.2 pytest-testdox mock
-RUN npm i @learnpack/learnpack@2.1.18 -g && learnpack plugins:install @learnpack/python
+RUN npm i @learnpack/learnpack@2.1.20 -g && learnpack plugins:install @learnpack/python@1.0.0