Updated KissFFT dependency to be version number based

Author: aure

Package.resolved

@@ -8,7 +8,7 @@ let package = Package(
     platforms: [.macOS(.v10_14), .iOS(.v13), .tvOS(.v13)],
     products: [.library(name: "SoundpipeAudioKit", targets: ["SoundpipeAudioKit"])],
     dependencies: [
-        .package(url: "https://github.com/AudioKit/KissFFT", .branch("main")),
+        .package(url: "https://github.com/AudioKit/KissFFT", from: "1.0.0"),
         .package(url: "https://github.com/AudioKit/AudioKit", from: "5.2.0"),
     ],
     targets: [