ubuntu 20.04 is deprecated by github

Author: rogerwwww

.github/workflows/python-publish.yml

@@ -46,7 +46,7 @@ jobs:
       fail-fast: false
       matrix:
         python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
-        os: [ ubuntu-20.04, windows-latest, macos-latest ]
+        os: [ ubuntu-latest, windows-latest, macos-latest ]
 
     runs-on: ${{ matrix.os }}