Skip astc on macOS x64 due to precompiled lib with too new clang ver

Source/ThirdParty/astc/astc.Build.cs

@@ -8,6 +8,22 @@ using Flax.Build.NativeCpp;
 /// </summary>
 public class astc : DepsModule
 {
+    /// <summary>
+    /// Returns true if can use astc lib for a given build setup.
+    /// </summary>
+    public static bool IsSupported(BuildOptions options)
+    {
+        switch (options.Platform.Target)
+        {
+        case TargetPlatform.Windows:
+            return true;
+        case TargetPlatform.Mac:
+            return options.Architecture == TargetArchitecture.ARM64;
+        default:
+            return false;
+        }
+    }
+
     /// <inheritdoc />
     public override void Init()
     {