Update to macOS 13

Author: TheAssassin

.github/workflows/main.yml

@@ -34,7 +34,7 @@ jobs:
 
   macos-release:
     name: macOS (x86_64) release
-    runs-on: macos-10.15
+    runs-on: macos-13
     steps:
       - uses: actions/checkout@v2
       - name: Checkout enet submodule