permission denied to create extension "pg_stat_statements"

**Describe the bug**

Trying to setup a new chatwoot server, and running either db:chatwoot_prepare or db:schema:load

```
rails aborted!
ActiveRecord::StatementInvalid: PG::InsufficientPrivilege: ERROR: permission denied to create extension "pg_stat_statements"
HINT: Must be superuser to create this extension.
/home/chatwoot/chatwoot/db/schema.rb:16:in `block in '
/home/chatwoot/chatwoot/db/schema.rb:13:in `'

Caused by:
PG::InsufficientPrivilege: ERROR: permission denied to create extension "pg_stat_statements"
HINT: Must be superuser to create this extension.
```

**To Reproduce**

My PG Setup
```
CREATE USER chatwoot NOINHERIT LOGIN PASSWORD '';
CREATE DATABASE chatwoot_production OWNER chatwoot;
GRANT ALL PRIVILEGES ON DATABASE chatwoot_production to chatwoot;
```
**Expected behavior**

A clear indication on what roles to give to chatwoot in the readme. Also, expecting chatwoot to get superadmin privilegies seems a bit excessive. Is there no other way to configure what you need ?

**Screenshots**

N/A

**Browser logs**

N/A

**Server logs**

N/A

**Environment**

Self hosted chatwoot, Linux VM deployment
release/2.2.1

**Desktop (please complete the following information):**
- OS: Debian 13

**Smartphone (please complete the following information):**
N/A

**Additional context**

Add any other context about the problem here.