Remove Python 3.11 support for Ubuntu 20.04

Removed support for Python 3.11 on Ubuntu 20.04 in the workflow.

Author: aksOps

.github/workflows/publish.yml

@@ -66,7 +66,6 @@ jobs:
           - { os: ubuntu-latest, python: "3.13" }
           - { os: ubuntu-22.04, python: "3.11" }
           - { os: ubuntu-22.04, python: "3.12" }
-          - { os: ubuntu-20.04, python: "3.11" }
     runs-on: ${{ matrix.os }}
     steps:
       - name: Download artifacts