ShrinkButtonStyle.swift

import SwiftUI

struct ContentView: View {

    var body: some View {
        Button(action: {
        }) {
            Text("Button")
                .padding()
                .foregroundColor(.white)
                .background(.blue)
                .cornerRadius(12)
        }
        .buttonStyle(ShrinkButtonStyle())
    }

    struct ShrinkButtonStyle: ButtonStyle {
        func makeBody(configuration: Self.Configuration) -> some View {
            configuration.label
                .scaleEffect(configuration.isPressed ? 0.95 : 1)
                .animation(
                    // Tweak animation
                    configuration.isPressed ? .interactiveSpring(response: 0.3) : .spring(response: 0.8),
                    value: configuration.isPressed
                )
        }
    }
}