update some test images

Author: minrk

.github/workflows/test.yml

@@ -56,7 +56,7 @@ jobs:
             python: pypy-3.9
             zmq: bundled
 
-          - os: ubuntu-20.04
+          - os: ubuntu-22.04
             python: "3.8"
             zmq: bundled
             tornado: none
@@ -79,13 +79,13 @@ jobs:
             python: "3.11"
             zmq: head
 
-          - os: ubuntu-22.04
+          - os: ubuntu-24.04
             python: "3.12"
 
-          - os: ubuntu-22.04
+          - os: ubuntu-24.04
             python: "3.13"
 
-          - os: ubuntu-22.04
+          - os: ubuntu-24.04
             python: "3.13"
             free_threading: free_threading