[conda-build-config] Add support for python-3.7 builds

bob/devtools/data/conda_build_config.yaml

@@ -32,6 +32,7 @@ pin_run_as_build:
 ## the dependencies that we build against multiple versions
 python:
   - 3.6
+  - 3.7
 
 zip_keys:
   -                             # [win]