Fix introspection query encoding

Author: lukel97

Package.resolved

@@ -7,7 +7,7 @@ let package = Package(
         .library(name: "GraphQL", targets: ["GraphQL"]),
     ],
     dependencies: [
-        .package(url: "https://github.com/apple/swift-nio.git", .upToNextMajor(from: "2.10.1")),
+        .package(url: "https://github.com/apple/swift-nio.git", .upToNextMajor(from: "2.38.0")),
         .package(url: "https://github.com/apple/swift-collections", .upToNextMajor(from: "1.0.0")),
     ],
     targets: [

Package.swift

@@ -124,13 +124,13 @@ struct IntrospectionSchema: Codable {
     let types: [AnyIntrospectionType]
 //    let directives: [IntrospectionDirective]
 
-    func encode(to encoder: Encoder) throws {
-        try types.encode(to: encoder)
-    }
+//    func encode(to encoder: Encoder) throws {
+//        try types.encode(to: encoder)
+//    }
 }
 
 protocol IntrospectionType: Codable {
-    static var kind: TypeKind2 { get }
+    var kind: TypeKind2 { get }
     var name: String { get }
 }
 
@@ -212,22 +212,22 @@ struct AnyIntrospectionType: Codable {
 //extension IntrospectionInputObjectType: IntrospectionInputType {}
 //
 struct IntrospectionScalarType: IntrospectionType {
-    static let kind = TypeKind2.scalar
+    var kind = TypeKind2.scalar
     let name: String
     let description: String?
     let specifiedByURL: String?
 }
 
 struct IntrospectionObjectType: IntrospectionType {
-    static let kind = TypeKind2.object
+    var kind = TypeKind2.object
     let name: String
     let description: String?
     let fields: [IntrospectionField]?
     let interfaces: [IntrospectionTypeRef]?
 }
 
 struct IntrospectionInterfaceType: IntrospectionType {
-    static let kind = TypeKind2.interface
+    var kind = TypeKind2.interface
     let name: String
     let description: String?
     let fields: [IntrospectionField]?
@@ -236,21 +236,21 @@ struct IntrospectionInterfaceType: IntrospectionType {
 }
 
 struct IntrospectionUnionType: IntrospectionType {
-    static let kind = TypeKind2.union
+    var kind = TypeKind2.union
     let name: String
     let description: String?
     let possibleTypes: [IntrospectionTypeRef]
 }
 
 struct IntrospectionEnumType: IntrospectionType {
-    static let kind = TypeKind2.enum
+    var kind = TypeKind2.enum
     let name: String
     let description: String?
     let enumValues: [IntrospectionEnumValue]
 }
 
 struct IntrospectionInputObjectType: IntrospectionType {
-    static let kind = TypeKind2.inputObject
+    var kind = TypeKind2.inputObject
     let name: String
     let description: String?
     let inputFields: [IntrospectionInputValue]