Build on ubuntu-latest for now

Signed-off-by: Jono Yang <jyang@nexb.com>

Author: JonoYang

.github/workflows/pypi-release.yml

@@ -51,7 +51,7 @@ jobs:
 
     strategy:
       matrix:
-       os: [ubuntu-latest, windows-latest, macos-13, macos-latest]
+       os: [ubuntu-latest]
 
     steps:
       - name: Checkout code