add Xcode setup step to macOS GitHub workflows

Author: allnes

.github/workflows/mac.yml

@@ -53,6 +53,10 @@ jobs:
       - uses: actions/checkout@v4
         with:
           submodules: recursive
+      - name: Install Xcode
+        uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: 'latest'
       - name: Setup environment
         run: |
           brew update-reset
@@ -94,6 +98,10 @@ jobs:
     runs-on: macOS-latest
     steps:
       - uses: actions/checkout@v4
+      - name: Install Xcode
+        uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: 'latest'
       - name: Setup environment
         run: |
           brew update-reset
@@ -156,6 +164,10 @@ jobs:
     runs-on: macOS-latest
     steps:
       - uses: actions/checkout@v4
+      - name: Install Xcode
+        uses: maxim-lobanov/setup-xcode@v1
+        with:
+          xcode-version: 'latest'
       - name: Setup environment
         run: |
           brew update-reset