ci: Fix exclude rule

Author: jorisv

.github/workflows/macos-linux-windows-conda.yml

@@ -44,7 +44,7 @@ jobs:
         exclude:
           - os: macos-latest
             cxx_options: '-mavx2'
-          - os: macos-14
+          - os: macos-13
             cxx_options: '-mavx2'
 
         include: