feat: add Homebrew installation step for macOS in build.yml

Author: WolfBublitz

.github/workflows/build.yml

@@ -30,6 +30,11 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
+    - name: Install Homebrew (macOS)
+      if: runner.os == 'macOS'
+      run: |
+        /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
+    
     - name: Setup .NET
       uses: actions/setup-dotnet@v4
       with: