Updates jsonschema to 3.0.1 - only impacts BEAT builds

This MR bumps the version of jsonschema to 3.0.1 on request from beat/beat.core#80 (closed). By consequence, it also updates beat-devel to a matching version.

bob/devtools/data/conda_build_config.yaml

@@ -56,7 +56,7 @@ bob_devel:
 # This version of beat-devel will be used at test time of packages. Notice it
 # uses bob-devel and should have a version that is greater or equal its value
 beat_devel:
-  - 2019.04.30
+  - 2019.05.07
 
 # The build time only dependencies (build requirements).
 # Updating these to the latest version all the time is OK and a good idea.
@@ -201,7 +201,7 @@ zc_recipe_egg:
 docker_py:
   - 3.6.0
 jsonschema:
-  - 2.6.0
+  - 3.0.1
 oset:
   - 0.1.3
 python_graphviz: