GHA: switch back to macos-latest for linux-musl-from-mac job [ci skip]

Follow-up to 43df529

Author: vszakats

.github/workflows/build.yml

@@ -473,7 +473,7 @@ jobs:
 
   linux-musl-from-mac:
     name: 'linux-musl-from-mac'
-    runs-on: macos-13
+    runs-on: 'macos-latest'
     timeout-minutes: 30
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4