Remove macos-13 from CI as it's EOL and gone

Author: mbrukman

.github/workflows/go.yaml

@@ -72,7 +72,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
-        os: [ 'ubuntu-24.04', 'ubuntu-22.04', 'macos-13' ]
+        os: [ 'ubuntu-24.04', 'ubuntu-22.04' ]
         go: [ '1.18', '1.17', '1.16', '1.15', '1.14', '1.13', '1.12' ]
     name: Go ${{ matrix.go }} (${{ matrix.os }})
     steps: