Replace all occurrences of 's1-prod-macos-13-5-arm64' with 's1-macos-15-arm64-8' (#2515)

Co-authored-by: service-bot-app[bot] <service-bot-app[bot]@users.noreply.github.com>

Author: service-bot-app[bot]

.semaphore/semaphore.yml

@@ -36,7 +36,7 @@ blocks:
     task:
       agent:
         machine:
-          type: s1-prod-macos-13-5-arm64
+          type: s1-macos-15-arm64-8
       jobs:
         - name: 'Build and test'
           commands: