Use latest OSX version

Author: blowekamp

.github/workflows/build-and-release.yml

@@ -99,7 +99,7 @@ jobs:
     env:
       MACOSX_SDK: '10.10'
       MACOSX_DEPLOYMENT_TARGET: '10.9'
-    runs-on: macos-10.15
+    runs-on: macos-11
     steps:
       - uses: actions/checkout@v3
         name: Checkout