Fix wasm 6.2 build

Author: finestructure

Sources/SemanticVersion/SemanticVersion+LosslessStringConvertible.swift

@@ -12,6 +12,10 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#if os(wasm) && swift(<6.3)
+import Foundation
+#endif
+
 
 extension SemanticVersion: LosslessStringConvertible {