Use newer macos

Signed-off-by: Christian Glusa <caglusa@sandia.gov>

Author: cgcgcg

.github/workflows/build.yml

@@ -155,7 +155,7 @@ jobs:
       fail-fast: false
     name: Mac clang Python ${{ matrix.py-version }}
 
-    runs-on: macos-12
+    runs-on: macos-13
     timeout-minutes: 180
     env:
       MPIEXEC_FLAGS: "--allow-run-as-root --oversubscribe"