Currently, the build pipeline builds arvados-cwl-runner deb/rpm packages with version=X and then tries to install an arvados-cwl-runner deb package with version=Y into the arvados-jobs docker image.

X≠Y when sdk/python changed more recently than sdk/cwl.

Need to fix sdk/cwl/arvados_version.py to match the "bump version if sdk/python has changed" logic in the arvados-jobs recipe.