fix: use macos-14 runner for x86_64-apple-darwin release build (#38)

macos-13 runner is no longer supported by GitHub Actions.
Cross-compile x86_64 on Apple Silicon (macos-14) instead.

Author: yishuiliunian

.github/workflows/release.yml

@@ -21,7 +21,7 @@ jobs:
       matrix:
         include:
           - target: x86_64-apple-darwin
-            os: macos-13
+            os: macos-14
             archive: tar.gz
           - target: aarch64-apple-darwin
             os: macos-14