update CI

- update machine version (the previous one was deprecated, see
https://discuss.circleci.com/t/linux-image-deprecations-and-eol-for-2024/50177 )

Author: nm2107

.circleci/config.yml

@@ -4,7 +4,7 @@ reference:
   vm_machine: &vm_machine
     working_directory: ~/should-skip-ci
     machine:
-      image: ubuntu-2004:202201-02
+      image: ubuntu-2204:edge
       docker_layer_caching: true
 
   checkout_step: &checkout_step