Update macOS runner version to 26 in workflow

Author: 1amageek

.github/workflows/test.yml

@@ -9,7 +9,7 @@ on:
 jobs:
   test-macos:
     name: Test on macOS
-    runs-on: macos-15
+    runs-on: macos-26
 
     steps:
     - uses: actions/checkout@v4