Merge pull request #6232 from slavapestov/foundation-data-fix-resilient-build

Foundation overlay: Fix resilient build

Author: slavapestov

stdlib/public/SDK/Foundation/Data.swift

@@ -907,7 +907,8 @@ public struct Data : ReferenceConvertible, Equatable, Hashable, RandomAccessColl
 
     public typealias Index = Int
     public typealias Indices = CountableRange<Int>
-    
+
+    @_versioned
     internal var _backing : _DataStorage
 
     // A standard or custom deallocator for `Data`.