Replace macos-13 with macos-15-intel.

.github/workflows/ci.yml

@@ -49,13 +49,13 @@ jobs:
             ubuntu-latest, # Linux on Intel
             ubuntu-22.04-arm, # Linux on arm64
             macos-latest, # macOS on Apple silicon
-            macos-13, # macOS on Intel
+            macos-15-intel, # macOS on Intel
             windows-latest
           ]
         set-gds-token: [false]
         components: ['']
         exclude:
-          - os: macos-13
+          - os: macos-15-intel
             java-version: 'dev'
         include:
           - java-version: 'latest-ea'
@@ -144,7 +144,7 @@ jobs:
           - version: '22.3.1'
             java-version: '11' # for JDK 11 notification
             components: 'native-image'
-            os: macos-13
+            os: macos-15-intel
           - version: '22.3.1'
             java-version: '17'
             components: 'native-image'