Fix release workflow: use macos-latest for x86_64-apple-darwin

macos-13 runners are no longer available. Use macos-latest (ARM) with
cross-compilation target instead.

Author: Dylan Bobby Storey

.github/workflows/release.yml

@@ -25,7 +25,7 @@ jobs:
             runner: ubuntu-24.04-arm
             asset: arawn-linux-aarch64.tar.gz
           - target: x86_64-apple-darwin
-            runner: macos-13
+            runner: macos-latest
             asset: arawn-darwin-x86_64.tar.gz
           - target: aarch64-apple-darwin
             runner: macos-latest