Hardcoding pip version for workflows#887

Geeks-Sid merged 2 commits intomlcommons:new-apis_v0.1.0-devmlcommons/GaNDLF:new-apis_v0.1.0-devfrom

benmalef:change_pip_version_in_workflowsbenmalef/GaNDLF:change_pip_version_in_workflowsCopy head branch name to clipboard