Update Nostr SDK Swift bindings to version 0.13.0-alpha.2

Author: github-actions

Package.swift

@@ -14,7 +14,7 @@ let package = Package(
     ],
     dependencies: [],
     targets: [
-        .binaryTarget(name: "nostr_sdkFFI", url: "https://github.com/rust-nostr/nostr-sdk-swift/releases/download/0.13.0-alpha.1/nostr_sdkFFI.xcframework.zip", checksum: "a82e11bdda990768febb1849388457ec046b9ee98a56025d73d846fa0ebc2850"),
+        .binaryTarget(name: "nostr_sdkFFI", url: "https://github.com/rust-nostr/nostr-sdk-swift/releases/download/0.13.0-alpha.2/nostr_sdkFFI.xcframework.zip", checksum: "9b7295c510618ef797bf6851a27a07a4733899479acb08909b24df1c3b551713"),
         .target(name: "NostrSDK", dependencies: ["nostr_sdkFFI"]),
     ]
 )