Update mongo Docker tag to v8

| datasource | package | from | to  |
| ---------- | ------- | ---- | --- |
| docker     | mongo   | 4.4  | 8.0 |

Author: renovate[bot]

Diff for: kubernetes/namespaces/databases/mongodb/deployment.yaml

@@ -17,7 +17,7 @@ spec:
     spec:
       containers:
         - name: mongodb
-          image: mongo:4.4
+          image: mongo:8.0
           imagePullPolicy: Always
           ports:
             - containerPort: 27017