apollographql/apollo-ios 1.12.0 on GitHub

ID as a custom scalar (#3379): This changes the generation of the built-in GraphQL ID scalar to be treated as a custom scalar that can be modified by the user. See PR #363.

Adds visionOS deployment to ApolloTestSupport podspec (#364): This adds the visionOS deployment target to the ApolloTestSupport podspec to match the other package managers.
Add @_spi(Execution) to executor for import in test mocks (#362): This replaces the use of @testable in ApolloTestSupport with specific @_spi scopes. This resolves a few issues that have been reported where the Apollo module could not be built for testing in non-debug configurations.