add macos-latest

Author: linkdata

.github/workflows/self-test.yml

@@ -20,7 +20,13 @@ permissions:
 
 jobs:
   integration:
-    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-latest
+          - macos-latest
+    runs-on: ${{ matrix.os }}
     steps:
       - name: Check out action source
         uses: actions/checkout@v4