Swift Language seems to be out of date

Hi, so i have this problem: I am following along a coding tutorial from a year ago. While following along i notice a couple of things do not seem to work (ViewModifier, CostumButtonStyle and most prominently the ViewBuilder wrapper), even though I have a newer version of Xcode installed on my computer. When asking Chatgpt, it says, that my version of swift is too old, which would explain a lot. When checking in the build setting it says I am using swift 5 (as well as giving me the option to downgrade to 4 and 4.2). So my question is, is chatgpt right? And if yes, how do I fix it and why doesn’t Xcode do it automatically? Thank you for your Help.

Note: When typing, Xcode still predicts and autofills the View Builder wrapper.

This it the code I had...

struct HeaderViewGeneric<Content:View>: View {
    
    let title: String
    let content: Content

    init(title: String, @ViewBuilder content: () -> Content) {
        self.title = title
        self.content = content()
    }
    
    var body: some View {
        VStack {
            VStack (alignment: .leading) {
                
                Text(title)
                .font(.largeTitle)
                .fontWeight(.semibold)
                
                content
                
                RoundedRectangle(cornerRadius: 5)
                    .frame(height: 2)
            }
            .frame(maxWidth: .infinity, alignment: .leading)
            .padding()
            
            Spacer()
        }
    }
}

This was the error:

Struct 'ViewBuilder' cannot be used as an attribute

And this was what ended up fixing it.

struct HeaderViewGeneric<Content:View>: View {
    
    let title: String
    let content: Content

    init(title: String, content: @escaping () -> Content) {
        self.title = title
        self.content = content()
    }
    
    var body: some View {
        VStack {
            VStack (alignment: .leading) {
                
                Text(title)
                .font(.largeTitle)
                .fontWeight(.semibold)
                
                content
                
                RoundedRectangle(cornerRadius: 5)
                    .frame(height: 2)
            }
            .frame(maxWidth: .infinity, alignment: .leading)
            .padding()
            
            Spacer()
        }
    }
}