Add @MainActor to some of the hook points.

compound-ios/Package.resolved

@@ -5,8 +5,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/element-hq/compound-design-tokens",
       "state" : {
-        "revision" : "be5d26dfd4ad659b0d3b3aec1ad1cccd0dc8d063",
-        "version" : "6.0.0"
+        "revision" : "93b48b3c88473562fb42c34100e45df25a4aea97",
+        "version" : "6.3.0"
       }
     },
     {

compound-ios/Sources/Compound/Colors/CompoundColors.swift

@@ -40,7 +40,7 @@ public class CompoundColors {
     
     /// Customise the colour at the specified key path with the supplied colour.
     /// Supplying `nil` as the colour will remove any existing customisation.
-    public func override(_ keyPath: KeyPath<CompoundColorTokens, Color>, with color: Color?) {
+    @MainActor public func override(_ keyPath: KeyPath<CompoundColorTokens, Color>, with color: Color?) {
         overrides[keyPath] = color
     }
     

compound-ios/Sources/Compound/Colors/CompoundUIColors.swift

@@ -35,7 +35,7 @@ public class CompoundUIColors {
     
     /// Customise the colour at the specified key path with the supplied colour.
     /// Supplying `nil` as the colour will remove any existing customisation.
-    public func override(_ keyPath: KeyPath<CompoundUIColorTokens, UIColor>, with color: UIColor?) {
+    @MainActor public func override(_ keyPath: KeyPath<CompoundUIColorTokens, UIColor>, with color: UIColor?) {
         overrides[keyPath] = color
     }
     

compound-ios/Tests/CompoundTests/OverrideColorTests.swift

@@ -11,6 +11,7 @@ import Foundation
 @testable import Compound
 import XCTest
 
+@MainActor
 class OverrideColorTests: XCTestCase {
     func testSwiftUI() {
         let colors = CompoundColors()