fix: Update retired runner 3

Author: tmathern

.github/workflows/build.yml

@@ -386,8 +386,6 @@ jobs:
         include:
           - target: arm64
             runs-on: macos-latest
-          - target: universal2
-            runs-on: macos-latest
           - target: x86_64
             runs-on: macos-15-intel