Change ubuntu to 22.04

Author: hp77-creator

.github/workflows/test-runtime.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       matrix:
         container:
-          - ubuntu-2404
+          - ubuntu-2204
           - fedora-39
     container:
       image: "hp77creator/bpftime-base-image:${{matrix.container}}"