Remove all uses of Step.call #4917

Job	Run time
check / Load tox environments	4s
latest_crds_contexts / retrieve latest CRDS contexts	2s
webbpsf_data_cache / retrieve latest WebbPSF data cache key	2s
crds_context	1s
check / check-dependencies (ubuntu-latest)	1m 45s
test / Load tox environments	5s
test / py310-oldestdeps-webbpsf-cov (ubuntu-latest)	28m 6s
test / py310-webbpsf-nolegacypath (ubuntu-latest)	24m 28s
test / py311-ddtrace-webbpsf (ubuntu-latest)	24m 1s
test / py311-ddtrace-webbpsf (macos-latest)	18m 20s
test / py311-webbpsf-cov (ubuntu-latest)	29m 23s
test / py312-webbpsf (ubuntu-latest)	23m 57s
	2h 30m 14s

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