ubuntu-20.04 is deprecated by github runners.

Author: mikaelfrykholm

.github/workflows/python-package.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ["ubuntu-24.04", "ubuntu-22.04", "ubuntu-20.04"]
+        os: ["ubuntu-24.04", "ubuntu-22.04"]
         python: ["3.9", "3.10", "3.11", "3.12"]
     runs-on:  ${{ matrix.os }}
     steps: