ci: add example e2e tests for different macos systems

Signed-off-by: peefy <[email protected]>

Author: Peefy

.github/workflows/example-e2e-tests.yaml

@@ -23,7 +23,10 @@ jobs:
         run: PATH=$PATH:$HOME/go/bin ./examples/test.sh
 
   macos:
-    runs-on: macos-latest
+    strategy:
+      matrix:
+        os: [macos-12, macos-13, macos-latest]
+    runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v5