Update OS matrix for build workflow

Author: bucanero

.github/workflows/build.yml

@@ -12,8 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest]
-#        os: [macos-15-intel, ubuntu-latest, macos-26]
+        os: [macos-15-intel, ubuntu-latest, macos-26]
 
     steps:
     - uses: actions/checkout@v6