Upgrade the project to use Xcode 15.4 (#3027)

* Update snapshots for Xcode 15.4

* Update CI.

* Fix crashing UI test.

* Fix compile error in Integration Tests.

* Try putting UI tests on GH runners again.

ElementX/Sources/Other/SwiftUI/Styles/FormButtonStyles.swift

@@ -31,6 +31,7 @@ struct FormActionButtonStyle: ButtonStyle {
             Text(title)
                 .foregroundColor(.compound.textPrimary)
                 .font(.compound.bodyLG)
+                .textCase(.none)
         }
         .padding(.horizontal, 4)
         .padding(.vertical, 8)