ci: update to use xcode 26

Author: russellwheatley

.github/workflows/swiftui-auth.yml

@@ -25,7 +25,7 @@ jobs:
   # Package Unit Tests (standalone, no emulator needed)
   unit-tests:
     name: Package Unit Tests
-    runs-on: macos-15
+    runs-on: macos-26
     timeout-minutes: 15
     steps:
       - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
@@ -34,7 +34,7 @@ jobs:
         run: gem install xcpretty
 
       - name: Select Xcode version
-        run: sudo xcode-select -switch /Applications/Xcode_16.4.app/Contents/Developer
+        run: sudo xcode-select -switch /Applications/Xcode_26.0.1.app/Contents/Developer
 
       - name: Run FirebaseSwiftUI Package Unit Tests
         run: |
@@ -62,7 +62,7 @@ jobs:
   # Integration Tests (requires emulator)
   integration-tests:
     name: Integration Tests
-    runs-on: macos-15
+    runs-on: macos-26
     timeout-minutes: 20
     steps:
       - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
@@ -90,7 +90,7 @@ jobs:
         run: gem install xcpretty
 
       - name: Select Xcode version
-        run: sudo xcode-select -switch /Applications/Xcode_16.4.app/Contents/Developer
+        run: sudo xcode-select -switch /Applications/Xcode_26.0.1.app/Contents/Developer
 
       - name: Build for Integration Tests
         run: |
@@ -128,7 +128,7 @@ jobs:
   # UI Tests (requires emulator)
   ui-tests:
     name: UI Tests
-    runs-on: macos-15
+    runs-on: macos-26
     timeout-minutes: 40
     steps:
       - uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
@@ -156,7 +156,7 @@ jobs:
         run: gem install xcpretty
 
       - name: Select Xcode version
-        run: sudo xcode-select -switch /Applications/Xcode_16.4.app/Contents/Developer
+        run: sudo xcode-select -switch /Applications/Xcode_26.0.1.app/Contents/Developer
 
       - name: Build for UI Tests
         run: |