Production - one of the Patroni-docreviewer pod is not running

Title of ticket:

#### Description

We have 3 pods for patroni-docreviewer in prod. One of them is not running.
[Private Zenhub Image](https://api.zenhub.com/attachedFiles/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBdFRqIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--9e68956da91a4e02b108c7041360d287dc0b6535/image.png)

**Log error:**
2023-09-27 18:42:08,477 WARNING: Postgresql is not running.
2023-09-27 18:42:08.686 UTC [2024597] FATAL: data directory "/home/postgres/pgdata/pgroot/data" has invalid permissions
2023-09-27 18:42:08.686 UTC [2024597] DETAIL: Permissions should be u=rwx (0700) or u=rwx,g=rx (0750).
localhost:5432 - no response

**Other details**
[Private Zenhub Image](https://api.zenhub.com/attachedFiles/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBdGZqIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--1704c20a8ed6f4d73829c5cea9e8431ba419af3a/image.png)

#### Dependencies
Are there any dependencies?

#### DOD
- [ ] List the items that need to be complete for this ticket to be considered done
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Inspect the patroni-docreviewer pod and the PostgreSQL log shown in the issue, starting by comparing the running and non-running replicas. Verify the data-directory permissions and pod health, and record the root cause and remediation; done means all three production pods are running and PostgreSQL responds on localhost:5432.

Written by the indexing model from the issue text.