Update CI runner to macos-14 and run tests with Xcode 15. (#17)

* Inspect versions

* Switch Xcode

* Test

* Print OS info

* Update macOS runner

* Cleanup

* Cleanup

* Test on Catalyst and visionOS

* Disable visionOS test

.github/workflows/build.yml

@@ -2,42 +2,49 @@ name: Build
 on:
   push:
     branches:
-      - 'main'
+      - "main"
     paths:
-      - '.github/workflows/build.yml'
-      - '**.swift'
+      - ".github/workflows/build.yml"
+      - "**.swift"
   pull_request:
     paths:
-      - '.github/workflows/build.yml'
-      - '**.swift'
+      - ".github/workflows/build.yml"
+      - "**.swift"
 concurrency:
   group: build-${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 jobs:
   build-macos:
     name: Build macOS
-    runs-on: macos-latest
+    runs-on: macos-14
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+      - uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: "15.0"
       - name: Run tests
         run: swift test -v
   build-other-platforms:
-    runs-on: macos-latest
+    runs-on: macos-14
     name: Build ${{ matrix.destination.name }}
     strategy:
       matrix:
         destination:
-          -
-            name: iOS
+          - name: iOS
             value: "platform=iOS Simulator,name=iPhone 14,OS=latest"
-          -
-            name: tvOS
+          - name: tvOS
             value: "platform=tvOS Simulator,name=Apple TV,OS=latest"
-          - 
-            name: watchOS
+          - name: watchOS
             value: "platform=watchOS Simulator,name=Apple Watch Series 8 (41mm),OS=latest"
+          - name: Catalyst
+            value: "platform=macOS,variant=Mac Catalyst,arch=arm64"
+          # - name: visionOS
+          #   value: "generic/platform=visionOS"
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+      - uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: "15.0"
       - name: Build
         run: |-
           set -o pipefail && NSUnbufferedIO=YES xcodebuild clean build \