chore(ingest): remove deprecated calls to Urn.create_from_string #1890

Job	Run time
event-file	2s
gx-plugin (3.8)	3m 26s
gx-plugin (3.10)	3m 12s
gx-plugin (3.11, great-expectations~=0.17.0)	3m 23s
gx-plugin (3.11, great-expectations~=0.18.0)	3m 18s
	13m 21s

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