fix: use macos-15 runner (macos-13 is retired)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: yuanhao

.github/workflows/release.yml

@@ -19,9 +19,9 @@ jobs:
           - target: x86_64-unknown-linux-gnu
             runner: ubuntu-latest
           - target: x86_64-apple-darwin
-            runner: macos-13
+            runner: macos-15
           - target: aarch64-apple-darwin
-            runner: macos-14
+            runner: macos-15
           - target: x86_64-pc-windows-msvc
             runner: windows-latest
     steps: