Update CI to run on macos-12

Author: hyazinthh

.github/workflows/test.yml

@@ -6,7 +6,7 @@ on:
 jobs:
   macos_x64:
     name: MacOS (x64)
-    runs-on: macos-11
+    runs-on: macos-12
     steps:  
       - name: Checkout
         uses: actions/checkout@v4
@@ -31,7 +31,7 @@ jobs:
           path: libs/Native/Aardvark.Assembler/mac/AMD64/
   macos_m1:
     name: MacOS (M1)
-    runs-on: macos-11
+    runs-on: macos-12
     steps:  
       - name: Checkout
         uses: actions/checkout@v4