Merge pull request #948 from hey-api/fix/schemas-generics #1396

Job	Run time
Build, Lint, Test (macos-latest, 18.x)	4m 5s
Build, Lint, Test (macos-latest, 20.x)	3m 24s
Build, Lint, Test (macos-latest, 21.x)	3m 30s
Build, Lint, Test (ubuntu-latest, 18.x)	4m 39s
Build, Lint, Test (ubuntu-latest, 20.x)	3m 59s
Build, Lint, Test (ubuntu-latest, 21.x)	3m 59s
Build, Lint, Test (windows-latest, 18.x)	6m 22s
Build, Lint, Test (windows-latest, 20.x)	6m 12s
Build, Lint, Test (windows-latest, 21.x)	6m 4s
	42m 14s

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