remove buster from CI

Author: rene-dev

.github/workflows/ci.yml

@@ -89,7 +89,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        image: ["debian:buster", "debian:bullseye", "debian:bookworm", "debian:sid"]
+        image: ["debian:bullseye", "debian:bookworm", "debian:sid"]
 
     container:
       image: ${{ matrix.image }}
@@ -170,7 +170,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        image: ["debian:buster", "debian:bullseye", "debian:bookworm", "debian:sid"]
+        image: ["debian:bullseye", "debian:bookworm", "debian:sid"]
     container:
       image: ${{ matrix.image }}
       # IPC_OWNER is needed for shmget IPC_CREAT