Update scala-collection-compat to 2.13.0 #857

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Job	Run time
Tag build	2m 31s
Build and test core (ubuntu-20.04, 2.12.15, zulu@1.17)	1s
Build and test core (ubuntu-20.04, 2.13.8, zulu@1.17)	1s
Build and test core (ubuntu-20.04, 3.1.0, zulu@1.17)	1s
Build client libraries #0	0s
Build client libraries #3	0s
Build client libraries #1	0s
Build client libraries #2	0s
Build client libraries #4	0s
Build client libraries #5	0s
Build client libraries #6	0s
Build client libraries #10	0s
Build client libraries #7	0s
Build client libraries #8	0s
Integration test	0s
Build client libraries #9	0s
Release	0s
Build and publish microsite	0s
	2m 34s

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