gha: add macos-15-intel, remove macos-13 (deprecated)

Signed-off-by: Sebastiaan van Stijn <[email protected]>

Author: thaJeztah

.github/workflows/build.yml

@@ -46,9 +46,9 @@ jobs:
         os:
           - ubuntu-24.04
           - ubuntu-22.04
+          - macOS-15-intel
           - macOS-15
           - macOS-14
-          - macOS-13
           - windows-2022
     steps:
       -