use alpine 3.20 in system test image

reubenmiller · reubenmiller · commit c2efdfd1ef78 · 2025-06-05T23:08:35.000+02:00
diff --git a/test-images/alpine-openrc-podman-cli/Dockerfile b/test-images/alpine-openrc-podman-cli/Dockerfile
@@ -1,4 +1,4 @@
-FROM docker.io/alpine:latest
+FROM docker.io/alpine:3.20
 ARG TARGETPLATFORM
 
 RUN apk add --no-cache \
