Upgrade macOS runner image to macOS 13

Signed-off-by: Austin Vazquez <macedonv@amazon.com>

Author: austinvazquez

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ jobs:
 
     strategy:
       matrix:
-        os: [ubuntu-22.04, macos-12] # TODO: Add windows-2019
+        os: [ubuntu-22.04, macos-13] # TODO: Add windows-2019
 
     steps:
       - uses: actions/setup-go@v4