Pinned PostgreSQL to v16.6 (#38)

This change was made to recover from an update made while attempting to address DevOps/ansible-role-eom#37, which was not solved here.

Reviewed-on: #38

tasks/main.yaml

@@ -3,4 +3,4 @@
 - name: Deploy
   include_tasks: "{{ item }}"
   loop:
-    - lemmy.yaml
+    - nextcloud.yaml

tasks/nextcloud.yaml

@@ -57,6 +57,8 @@
       cronjob:
         enabled: true
       redis:
+        #global:
+            #defaultStorageClass: r720-nfs-client
         enabled: true
         auth:
           password: "{{ redis_auth_password }}"
@@ -109,6 +111,8 @@
         database: nextcloud
       postgresql:
         enabled: true
+        image:
+          tag: 16.6.0-debian-12-r2
         global:
           postgresql:
             auth: