Bump the CI workflows to iOS 26.5, centralise default OS version

PreviewTests/Sources/PreviewTests.swift

@@ -21,7 +21,7 @@ struct PreviewTests {
     
     private let deviceConfig: ViewImageConfig = .iPhoneX
     private let simulatorDevice: String? = "iPhone14,6" // iPhone SE 3rd Generation
-    private let requiredOSVersion = (major: 26, minor: 4)
+    private let requiredOSVersion = (major: 26, minor: 5)
     /// The key is the name we will give to the snapshot
     /// The value is the actual device that will be used to render the preview
     private let snapshotDevices: [SnapshotDevice] = [.init(name: "iPhone", device: "iPhone 17"),

Tools/Sources/Commands/CI/AccessibilityTests.swift

@@ -9,7 +9,7 @@ struct AccessibilityTests: AsyncParsableCommand {
     var device = "iPhone 17"
     
     @Option(help: "iOS version for the simulator.")
-    var osVersion = "26.4.1"
+    var osVersion = CI.defaultOSVersion
     
     func run() async throws {
         var testsFailed = false

Tools/Sources/Commands/CI/CI.swift

@@ -19,6 +19,7 @@ struct CI: ParsableCommand {
                                                         ReleaseToGitHub.self
                                                     ])
     
+    static let defaultOSVersion = "26.5"
     static let testOutputDirectory = "test_output"
     
     /// Reads the `MARKETING_VERSION` from `project.yml`.

Tools/Sources/Commands/CI/IntegrationTests.swift

@@ -13,7 +13,7 @@ struct IntegrationTests: AsyncParsableCommand {
     var device = "iPhone 17"
     
     @Option(help: "iOS version for the simulator.")
-    var osVersion = "26.4.1"
+    var osVersion = CI.defaultOSVersion
     
     func run() async throws {
         // Delete old log files

Tools/Sources/Commands/CI/PreviewTests.swift

@@ -10,7 +10,7 @@ struct PreviewTests: AsyncParsableCommand {
     
     private static let scheme = "PreviewTests"
     private static let device = "iPhone SE (3rd generation)"
-    private static let osVersion = "26.4.1"
+    private static let osVersion = CI.defaultOSVersion
     private static let simulatorType = "com.apple.CoreSimulator.SimDeviceType.iPhone-SE-3rd-generation"
     private static let testPlanPath = "PreviewTests/SupportingFiles/PreviewTests.xctestplan"
     

Tools/Sources/Commands/CI/RunTests.swift

@@ -9,7 +9,7 @@ struct RunTests: AsyncParsableCommand {
                                                     
                                                     Examples:
                                                       swift run tools run-tests --scheme UnitTests
-                                                      swift run tools run-tests --scheme UITests --device iPhone --os-version 26.4
+                                                      swift run tools run-tests --scheme UITests --device iPhone --os-version 26.5
                                                       swift run tools run-tests --scheme PreviewTests --create-simulator-name "iPhone SE (3rd generation)" \
                                                         --create-simulator-type com.apple.CoreSimulator.SimDeviceType.iPhone-SE-3rd-generation
                                                     """)
@@ -20,8 +20,8 @@ struct RunTests: AsyncParsableCommand {
     @Option(help: "The simulator device name to run tests on (e.g. 'iPhone 17').")
     var device = "iPhone 17"
     
-    @Option(help: "The iOS version to use for the simulator runtime (e.g. '26.4').")
+    @Option(help: "The iOS version to use for the simulator runtime (e.g. '26.5').")
-    var osVersion = "26.4.1"
+    var osVersion = CI.defaultOSVersion
     
     var runtime: String {
         osVersion.split(separator: ".").prefix(2).joined(separator: ".")

Tools/Sources/Commands/CI/UITests.swift

@@ -20,7 +20,7 @@ struct UITests: AsyncParsableCommand {
     var deviceType: DeviceType
     
     @Option(help: "iOS version for the simulator.")
-    var osVersion = "26.4.1"
+    var osVersion = CI.defaultOSVersion
     
     @Option(help: "Run only a specific test (format: 'ClassName/testName').")
     var testName: String?

Tools/Sources/Commands/CI/UnitTests.swift

@@ -8,7 +8,7 @@ struct UnitTests: AsyncParsableCommand {
     @Flag(help: "Skip preview tests")
     var skipPreviews = false
     
-    private static let osVersion = "26.4.1"
+    private static let osVersion = CI.defaultOSVersion
     private static let device = "iPhone 17"
     
     func run() async throws {

UITests/Sources/Application.swift

@@ -35,7 +35,7 @@ enum Application {
     private static func checkEnvironments() {
         let requirediPhoneSimulator = "iPhone18,3" // iPhone 17
         let requirediPadSimulator = "iPad15,7" // iPad (A16)
-        let requiredOSVersion = (major: 26, minor: 4)
+        let requiredOSVersion = (major: 26, minor: 5)
         
         let osVersion = ProcessInfo().operatingSystemVersion
         guard osVersion.majorVersion == requiredOSVersion.major, osVersion.minorVersion == requiredOSVersion.minor else {

ci_scripts/ci_common.sh

@@ -39,7 +39,7 @@ setup_github_actions_translations_environment() {
 
 xcode_select_for_github_actions() {
     # We need to select it globally for other processes like xcresultparser and our custom tools to use the same Xcode version.
-    sudo xcode-select -s /Applications/Xcode_26.4.app
+    sudo xcode-select -s /Applications/Xcode_26.5.0.app
 }
 
 generate_what_to_test_notes() {