Rely on podman's built-in update mechanism

.local/bin/update-container-images

@@ -1,15 +0,0 @@
-#! /usr/bin/bash
-
-set -euo pipefail
-IFS=$'\n\t'
-
-IMAGES=(
-    # keep-sorted start
-    docker.io/ollama/ollama:latest
-    docker.io/plantuml/plantuml-server:jetty
-    ghcr.io/hadolint/hadolint:latest
-    lscr.io/linuxserver/transmission:latest
-    # keep-sorted end
-)
-
-podman pull "${IMAGES[@]}"

.local/bin/upgrade

@@ -28,4 +28,4 @@ pipx_update
 cargo_update
 ghup
 git_sync_update
-update-container-images
+podman auto-update