chore(gha): bump macos runner to 13

Author: tinaboyce

.github/workflows/go.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ubuntu-latest, macOS-latest, macos-12]
+        os: [ubuntu-latest, macOS-latest, macos-13]
     steps:
       - name: Check out code into the Go module directory
         uses: actions/checkout@v4