Bump macOS CI version to macOS 15 (#152)

Author: Kyle-Ye

.github/workflows/compatibility_tests.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-14]
+        os: [macos-15]
         xcode-version: ["16.0"]
         release: [2024]
     runs-on: ${{ matrix.os }}
@@ -49,7 +49,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-14]
+        os: [macos-15]
         xcode-version: ["16.0"]
         release: [2024]
         ios-version: ["18.0"]

.github/workflows/ios.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-14]
+        os: [macos-15]
         xcode-version: [16.0]
         release: [2021, 2024]
         ios-version: ["18.0"]

.github/workflows/macos.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-14]
+        os: [macos-15]
         xcode-version: [16.0]
         release: [2021, 2024]
     runs-on: ${{ matrix.os }}

Package.swift

@@ -26,28 +26,14 @@ let systemFrameworkSearchFlag = isXcodeEnv ? "-iframework" : "-Fsystem"
 let releaseVersion = Context.environment["OPENSWIFTUI_TARGET_RELEASE"].flatMap { Int($0) } ?? 2021
 let platforms: [SupportedPlatform] = switch releaseVersion {
 case 2024: // iOS 18.0
-    // FIXME: non-Darwin platform nightly Swift 6 compiler have not add the latest OS yet
-    #if canImport(Darwin)
     [
         .iOS(.v18),
-        // FIXME: temporary lower the requirement since there is no macOS 15 CI yet.
-        // .macOS(.v15),
-        .macOS(.v14),
+        .macOS(.v15),
         .macCatalyst(.v18),
         .tvOS(.v18),
         .watchOS(.v10),
         .visionOS(.v2),
     ]
-    #else
-    [
-        .iOS(.v17),
-        .macOS(.v14),
-        .macCatalyst(.v17),
-        .tvOS(.v17),
-        .watchOS(.v9),
-        .visionOS(.v1),
-    ]
-    #endif
 case 2021: // iOS 15.5
     [
         .iOS(.v15),