[diun] Improve tag matching by using 'sort_tags' & 'max_tags'

roles/diun/templates/images.yml

@@ -1,23 +1,27 @@
 - name: quay.io/hedgedoc/hedgedoc
   watch_repo: true
+  sort_tags: semver
+  max_tags: 1
   include_tags:
-    - ^2
+    - ^[\d\.]+-alpine$
 
 - name: quay.io/keycloak/keycloak
   watch_repo: true
+  sort_tags: semver
+  max_tags: 1
   include_tags:
-    - ^25\.\d$
-    - ^26
+    - ^\d+\.\d+$
 
 - name: docker.io/stalwartlabs/mail-server
   watch_repo: true
+  sort_tags: semver
+  max_tags: 1
   include_tags:
-    - ^v0\.(9|\d{2})
-    - ^v1
+    - ^v
 
 - name: docker.io/aaronleopold/stump
   watch_repo: true
+  sort_tags: semver
+  max_tags: 1
   include_tags:
-    - ^0\.0\.([5-9]|\d{2})$
-    - ^0\.([1-9]|\d{2})
-    - ^1
+    - ^\d