Test flake (409 Conflict) in TestMarketplace/no-setup-test-group/default-catalogsource-test-suite/update-default-catalogsource

[benluddy]

             --- FAIL: TestMarketplace/no-setup-test-group/default-catalogsource-test-suite/update-default-catalogsource (0.14s)
            	require.go:794: 
            			Error Trace:	defaultcatsrctests.go:75
            			Error:      	Received unexpected error:
            			            	Operation cannot be fulfilled on catalogsources.operators.coreos.com "redhat-operators": the object has been modified; please apply your changes to the latest version and try again
            			Test:       	TestMarketplace/no-setup-test-group/default-catalogsource-test-suite/update-default-catalogsource
            			Messages:   	Default CatalogSource could not be updated successfully