Update Rust crate async-graphql to v7.0.6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
async-graphql	dependencies	patch	7.0.3 -> 7.0.6

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Release Notes

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

v7.0.6

• add license files to each project #​1523
• Improve alignment of directive behavior with GraphQL spec #​1524
• dynamic schema: pass default vals to ResolverContext #​1527
• Add altair source #​1530
• feat: Add support for using Interface and OneofObject on the same struct #​1534

v7.0.5

• Fix compiler and clippy warnings #​1501
• Added support for deploying to wasm targets with axum - (without subscriptions) #​1517
• Bump opentelemetry (0.21.0 -> 0.22.0) #​1513
• Update lru dependency #​1504
• Support TypeDirective for ArgumentDefinition, Enum, EnumValue, InputFieldDefinition, InputObject, Interface #​1509
• Add display attribute for Enum macro #​1518

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