CI: Downgrade sims

Author: pblazej

.github/workflows/ci.yaml

@@ -59,12 +59,13 @@ jobs:
             platform: "tvOS Simulator,name=Apple TV,OS=18.5"
 
           # https://github.com/actions/runner-images/blob/main/images/macos/macos-26-arm64-Readme.md
+          # Use latest-stable temporarily to avoid missing sims
           - os: macos-26
-            xcode: latest
+            xcode: latest-stable
             platform: "iOS Simulator,name=iPhone 17 Pro,OS=26.1"
             symbol-graph: true
           - os: macos-26
-            xcode: latest
+            xcode: latest-stable
             platform: "iOS Simulator,name=iPhone 17 Pro,OS=26.1"
             extension-api-only: true
           - os: macos-26
@@ -83,10 +84,10 @@ jobs:
             xcode: latest
             platform: "macOS,variant=Mac Catalyst"
           - os: macos-26
-            xcode: latest
+            xcode: latest-stable
             platform: "visionOS Simulator,name=Apple Vision Pro,OS=26.1"
           - os: macos-26
-            xcode: latest
+            xcode: latest-stable
             platform: "tvOS Simulator,name=Apple TV,OS=26.1"
 
     runs-on: ${{ matrix.os }}