chore(docker): bump vabene1111/recipes Docker tag to v2.6.15

docker/personal/tandoor/docker-compose.yml

@@ -9,7 +9,7 @@ services:
 
   web_recipes:
     restart: always
-    image: vabene1111/recipes:2.6.13
+    image: vabene1111/recipes:2.6.15
     networks:
       - default
       - proxy

kubernetes/infrastructure/mail/stalwart/values.yaml

@@ -7,7 +7,7 @@
 # Container image
 image:
     repository: stalwartlabs/stalwart
-    tag: v0.16.22
+    tag: v0.16.20
     pullPolicy: IfNotPresent
 # Single-node RocksDB deployment.
 replicaCount: 1