Only run codegen tests on Linux

Author: markerikson

.github/workflows/test-codegen.yml

@@ -80,7 +80,7 @@ jobs:
       fail-fast: false
       matrix:
         node-version: [20.x]
-        os: [ubuntu-latest, windows-latest, macos-latest]
+        os: [ubuntu-latest]
 
     steps:
       - name: Checkout repository