[MNT] Replace live server calls with mocks in test_run.py#1695

KanishqGandharv219 wants to merge 3 commits intoopenml:mainopenml/openml-python:mainfrom

KanishqGandharv219:feature/mock-test-runKanishqGandharv219/openml-python:feature/mock-test-runCopy head branch name to clipboard