MAINT: Replace deprecated macos-12 with macos-latest

Author: hugovk

.github/workflows/mypy.yml

@@ -48,7 +48,7 @@ jobs:
         os_python:
           - [ubuntu-latest, '3.12']
           - [windows-2019, '3.11']
-          - [macos-12, '3.10']
+          - [macos-latest, '3.10']
     steps:
     - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
       with: