fix(docker-image): update ghcr.io/paperless-ngx/paperless-ngx docker …

…tag to v1.16.4

| datasource | package                             | from   | to     |
| ---------- | ----------------------------------- | ------ | ------ |
| docker     | ghcr.io/paperless-ngx/paperless-ngx | 1.16.2 | 1.16.4 |

charts/apps/paperless/values.yaml

@@ -12,7 +12,7 @@ image:
   pullPolicy: IfNotPresent
   # -- image tag
   # @default -- chart.appVersion
-  tag: 1.16.2
+  tag: 1.16.4
 
 # -- See the following files for additional environment variables:
 # https://github.com/paperless-ngx/paperless-ngx/tree/main/docker/compose/