Update schema exports #1364

Job	Run time
PostGraphile mutation tests (exported as graphql-js) / build (12, 20.x)	9m 33s
@dataplan/pg tests / build (12, 20.x)	3m 22s
PostGraphile mutation tests / build (12, 20.x)	3m 29s
PostGraphile mutation tests (exported as typeDefs) / build (12, 20.x)	7m 50s
PostGraphile polymorphic query tests / build (12, 20.x)	3m 3s
PostGraphile polymorphic query tests (exported as graphql-js) / build (12, 20.x)	7m 39s
PostGraphile polymorphic query tests (exported as typeDefs) / build (12, 20.x)	5m 58s
PostGraphile v4 queries tests / build (12, 20.x)	3m 53s
PostGraphile v4 queries tests (exported as typeDefs) / build (12, 20.x)	12m 53s
PostGraphile v4 queries tests (exported as graphql-js) / build (12, 20.x)	16m 37s
PostGraphile schema tests / build (12, 20.x)	6m 32s
Small package tests / build (12, 20.x)	3m 0s
	1h 23m 49s

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