Internal change.

PiperOrigin-RevId: 841879940

Author: ericsalo

.github/BUILD.bazel

@@ -4,6 +4,19 @@
 # When updating, also ensure the "xcode_destination" entries in
 # `.github/workflows/test_objectivec.yml` are supported for the given versions
 # of Xcode.
+xcode_version(
+    name = "version16_0",
+    aliases = [
+        "160",
+        "16.0",
+    ],
+    default_ios_sdk_version = "17.2",
+    default_macos_sdk_version = "14.2",
+    default_tvos_sdk_version = "17.2",
+    default_watchos_sdk_version = "10.2",
+    version = "16.0",
+)
+
 xcode_version(
     name = "version15_2_15C500b",
     aliases = [
@@ -52,3 +65,10 @@ xcode_config(
         ":version14_1_0_14B47b",
     ],
 )
+
+# https://github.com/actions/runner-images/blob/main/images/macos/macos-15-arm64-Readme.md#xcode
+xcode_config(
+    name = "host_xcode_16_macos_15",
+    default = ":version16_0",
+    versions = [":version16_0"],
+)

.github/workflows/test_php.yml

@@ -193,7 +193,7 @@ jobs:
 
     name: ${{ matrix.continuous-only && inputs.continuous-prefix || '' }} MacOS PHP ${{ matrix.version }}
     # noop
-    runs-on: macos-13
+    runs-on: macos-15-intel
     steps:
       - name: Checkout pending changes
         if: ${{ !matrix.continuous-only || inputs.continuous-run }}
@@ -224,6 +224,8 @@ jobs:
         with:
           credentials: ${{ secrets.GAR_SERVICE_ACCOUNT }}
           bazel-version: 8.0.1
+          # TODO this shouldn't be necessary, remove it
+          bazel-flags: --xcode_version_config=//.github:host_xcode_16_macos_15
           command: |
             pushd php
             php -v
@@ -238,5 +240,5 @@ jobs:
         with:
           credentials: ${{ secrets.GAR_SERVICE_ACCOUNT }}
           version: 8.0.1 # Bazel version
-          bazel-cache: php_macos/${{ matrix.version }}
-          bazel: test //php:conformance_test //php:conformance_test_c --action_env=PATH --test_env=PATH
+          bazel-cache: php_macos15/${{ matrix.version }}
+          bazel: test //php:conformance_test //php:conformance_test_c --action_env=PATH --test_env=PATH --xcode_version_config=//.github:host_xcode_16_macos_15