Run swift testing in series

Author: bgoncal

Tests/App/ClientEvents/LocationHistoryListViewSnapshot.test.swift

@@ -2,6 +2,7 @@
 import SharedTesting
 import Testing
 
+@Suite(.serialized)
 struct LocationHistoryListViewSnapshotTests {
     @available(iOS 18, *)
     @MainActor @Test func snapshots() {

Tests/App/MagicItem/MagicItemProviderTests.swift

@@ -1,6 +1,7 @@
 @testable import Shared
 import Testing
 
+@Suite(.serialized)
 struct MagicItemProviderTests {
     private var sut: MagicItemProvider
 

Tests/Widgets/WidgetsSnapshot.test.swift

@@ -5,6 +5,7 @@ import SharedTesting
 import Testing
 import WidgetKit
 
+@Suite(.serialized)
 struct WidgetsSnapshotTests {
     @available(iOS 18, *)
     @MainActor @Test func systemLargeSnapshots() {