Merge #442 by meteorcloudy: Update platform for macOS to apple silicon

Closes #442

COPYBARA_INTEGRATE_REVIEW=#442 from bazelbuild:meteorcloudy-patch-2 fba24b6
PiperOrigin-RevId: 853889005
Change-Id: I8f886f490561e4854ff327575289d9396078cef8

Author: meteorcloudy

.bcr/presubmit.yml

@@ -1,7 +1,7 @@
 bcr_test_module:
   module_path: examples/basicapp
   matrix:
-    platform: ["ubuntu2404", "macos", "windows"]
+    platform: ["ubuntu2404", "macos_arm64", "windows"]
     bazel: ["7.7.1", "8.4.2", "rolling"]
   tasks:
     run_test_module: