Update GitHub Actions to use Ubuntu 24.04 and latest actions

Author: constantinius

.github/workflows/publish.yaml

@@ -7,10 +7,10 @@ on:
 
 jobs:
   publish:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-python@v2
+    - uses: actions/checkout@v5
+    - uses: actions/setup-python@v6
       name: Setup Python
       with:
         python-version: "3.x"
@@ -23,4 +23,4 @@ jobs:
       uses: pypa/gh-action-pypi-publish@release/v1
       with:
         user: __token__
-        password: ${{ secrets.PYPI_API_TOKEN }}
+        password: ${{ secrets.PYPI_API_TOKEN }}