feat: add net11.0 target - #70

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v2, actions/setup-dotnet@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

'AsyncApiMessageReference' overrides Object.Equals(object o) but does not override Object.GetHashCode()

'AsyncApiJsonSchemaReference' defines operator == or operator != but does not override Object.GetHashCode()

'AsyncApiJsonSchemaReference' overrides Object.Equals(object o) but does not override Object.GetHashCode()

'AsyncApiExternalDocumentationReference' defines operator == or operator != but does not override Object.GetHashCode()

'AsyncApiExternalDocumentationReference' overrides Object.Equals(object o) but does not override Object.GetHashCode()

'AsyncApiCorrelationIdReference' defines operator == or operator != but does not override Object.GetHashCode()

'AsyncApiCorrelationIdReference' overrides Object.Equals(object o) but does not override Object.GetHashCode()

'AsyncApiChannelReference' defines operator == or operator != but does not override Object.GetHashCode()

'AsyncApiChannelReference' overrides Object.Equals(object o) but does not override Object.GetHashCode()

The annotation for nullable reference types should only be used in code within a '#nullable' annotations context.