### Summary

As of now, we only retry galaxy API requests when they result in error codes defined within `RETRY_HTTP_ERROR_CODES`.

Some times there are also transient timeout errors, that are not represented by these status codes, and instead raise a `TimeoutError`.

Evaluate extending the function used by `should_retry_error`, to also retry on `TimeoutError`.

### Issue Type

Bug Report

### Component Name

lib/ansible/galaxy/api.py

### Ansible Version

```console
$ ansible --version
```


### Configuration

```console
# if using a version older than ansible-core 2.12 you should omit the '-t all'
$ ansible-config dump --only-changed -t all
```


### OS / Environment

N/A

### Steps to Reproduce

<!--- Paste example playbooks or commands between quotes below -->
```yaml (paste below)

```


### Expected Results

N/A

### Actual Results

```console
N/A
```


### Code of Conduct

- [X] I agree to follow the Ansible Code of Conduct
display.vvvv("Calling Galaxy at %s" % url)
            resp = open_url(to_native(url), data=args, validate_certs=self.validate_certs, headers=headers,
                            method=method, timeout=self._server_timeout, http_agent=user_agent(), follow_redirects='safe')
        except HTTPError as e:
            raise GalaxyError(e, error_context_msg)
        except Exception as e:
            raise AnsibleError("Unknown error when attempting to call Galaxy at '%s': %s" % (url, to_native(e)))
        resp_data = to_text(resp.read(), errors='surrogate_or_strict')
        try:
            data = json.loads(resp_data)
        except ValueError:
            raise AnsibleError("Failed to parse Galaxy response from '%s' as JSON:\n%s"
                               % (resp.url, to_native(resp_data)))
        if cache and self._cache:
            path_cache = self._cache[cache_id][cache_key]
            
            paginated_key = None
            for key in ['data', 'results']:
                if key in data:
                    paginated_key = key
                    break
            if paginated_key:
                path_cache['paginated'] = True
                results = path_cache.setdefault('results', [])
                for result in data[paginated_key]:
                    results.append(result)
            else:
                path_cache['results'] = data
        return data
    def _add_auth_token(self, headers, url, token_type=None, required=False):