[ci[ Update runner for macos 13 (#20)

Author: sciencewhiz

.github/workflows/ci.yml

@@ -116,7 +116,7 @@ jobs:
     env:
       MACOSX_DEPLOYMENT_TARGET: 10.14
     name: "Build - macOS"
-    runs-on: macos-11
+    runs-on: macos-13
     steps:
       - uses: actions/checkout@v4
         with: