Merge pull request #3333 from MishimaHaruna/fix-clang15-ci

Fix clang-15 CI jobs in GitHub Actions

Author: hemagx

.github/workflows/clang15_test.yml

@@ -32,7 +32,7 @@ jobs:
       cancel-in-progress: true
 
     container:
-      image: debian:unstable
+      image: debian:stable
     services:
       mariadb:
         image: mariadb:latest