Remove passwordSecret references and hardcode passwords for authentik and postgres users in CloudNativePG configuration

CloudNativePG does not support automatic secretion creation yet: https://github.com/cloudnative-pg/cloudnative-pg/issues/3788

applications/templates/cloudnativepg.yaml

@@ -95,16 +95,14 @@ spec:
         ensure: present
         login: true
         superuser: true
-        passwordSecret:
-          name: postgres-marco
+        password: bGd7nChCpPQmypR64rgF
       - name: authentik
         connectionLimit: -1
         inherit: true
         ensure: present
         login: true
         createdb: true
-        passwordSecret:
-          name: postgres-authentik
+        password: HhkdVmKmHsR3g5bUeUGu
 ---
 apiVersion: objectbucket.io/v1alpha1
 kind: ObjectBucketClaim