update amplify dependency to 2.51.5

Author: thisisabhash

HostApp/HostApp.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -13,7 +13,7 @@ let package = Package(
             targets: ["FaceLiveness"]),
     ],
     dependencies: [
-        .package(url: "https://github.com/aws-amplify/amplify-swift", branch: "fix/liveness-memory-leaks")
+        .package(url: "https://github.com/aws-amplify/amplify-swift", from: "2.51.5")
     ],
     targets: [
         .target(