Bump swift-syntax dependency to 509.0.2

Author: jmschonfeld

Package.swift

@@ -30,7 +30,7 @@ let package = Package(
             revision: "0c1de7149a39a9ff82d4db66234dec587b30a3ad"),
         .package(
             url: "https://github.com/apple/swift-syntax.git",
-            from: "509.0.0")
+            from: "509.0.2")
     ],
     targets: [
         // Foundation (umbrella)