gha: update to use macos-13, macos-14

macos-11 runners are being deprecated; updating to use
macos-13 (x86) and macos-14 (arm64)

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Author: thaJeztah

.github/workflows/build.yml

@@ -46,7 +46,8 @@ jobs:
         os:
           - ubuntu-22.04
           - ubuntu-20.04
-          - macOS-11
+          - macOS-14
+          - macOS-13
           - windows-2022
     steps:
       -