chore(deps): update rust crate async-graphql to v7.0.12

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
async-graphql	workspace.dependencies	patch	7.0.11 -> 7.0.12

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Release Notes

async-graphql/async-graphql (async-graphql)

v7.0.12

• update MSRV to 1.81.0
• Add specified complexity for fields in SimpleObject.
• feat: expose SDL export utilities in ExtensionContext #​1606
• feat(dynamic-schema): specify type directives in schema #​1607
• Make http2 optional for actix #​1612
• chore: use std OnceLock instead LazyLock #​1613
• Add UUID validator #​1588
• Update secrecy and support new types #​1627
• fix #​1626
• Allow non-native concrete types in generic structs deriving SimpleObject + InputObject #​1629
• chore: update opentelemetry to 0.27 #​1614
• connection: Allow 'first' and 'last' parameters to exist at the same time #​1602
• feat(dynamic-schema): specify type directives in schema #​1607
• Make boxed_any and borrowed_any for FieldValue work with trait objects again #​1636
• Add new altair option #​1642
• Fix Clippy for latest stable #​1639
• Add boxed-trait feature #​1641
• Support directive in complex object #​1644

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