Update CI build to latest Xcode version

Author: tobihagemann

.github/workflows/build.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: [self-hosted, macOS, ARM64]
     env:
       DERIVED_DATA_PATH: 'DerivedData'
-      DEVICE: 'iPhone 15 Pro'
+      DEVICE: 'iPhone 17 Pro'
     steps:
       - uses: actions/checkout@v4
         with:
@@ -49,7 +49,7 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/')
     env:
       DERIVED_DATA_PATH: 'DerivedData'
-      DEVICE: 'iPhone 15 Pro'
+      DEVICE: 'iPhone 17 Pro'
     strategy:
       fail-fast: false
       matrix:

.xcode-version

@@ -0,0 +1 @@
+26.0.1