feat: Updates tailwind to 4.*

Sources/ViewControllerLive/Live.swift

@@ -7,7 +7,7 @@ extension ViewController: DependencyKey {
   public static var liveValue: ViewController {
     .init(view: { _ in
       MainPage {
-        h1 { "It works!" }
+        h1(.class("text-red-100")) { "It works!" }
       }
     })
   }

Sources/ViewControllerLive/Views/MainPage.swift

@@ -31,7 +31,7 @@ struct MainPage<Inner: HTML>: SendableHTMLDocument where Inner: Sendable {
 
   var body: some HTML {
     main {
-      div(.class("min-h-screen bg-gradient-to-br from-green-50 to-blue-50")) {
+      div(.class("min-h-screen bg-linear-to-br from-green-50 to-blue-50")) {
         header(.class("header")) {
           h1(.class("text-red-600")) { title }
         }