CI-unixish-docker.yml: updated to ubuntu 23.04 (#4992)

Author: firewave

.github/workflows/CI-unixish-docker.yml

@@ -12,7 +12,7 @@ jobs:
 
     strategy:
       matrix:
-        image: ["centos:7", "ubuntu:14.04", "ubuntu:16.04", "ubuntu:18.04", "ubuntu:22.10"]
+        image: ["centos:7", "ubuntu:14.04", "ubuntu:16.04", "ubuntu:18.04", "ubuntu:23.04"]
       fail-fast: false # Prefer quick result
 
     runs-on: ubuntu-22.04