feat(Wordpress Node): Add option to ignore error when using self signed certificates (#8199)

## Summary
Adds option to ignore SSL issues to the Wordpress node, This is useful
when using a self signed certificate in a local setup.


## Related tickets and issues
https://github.com/n8n-io/n8n/issues/8151

packages/nodes-base/nodes/Wordpress/GenericFunctions.ts

@@ -30,6 +30,7 @@ export async function wordpressApiRequest(
 		qs,
 		body,
 		uri: uri || `${credentials.url}/wp-json/wp/v2${resource}`,
+		rejectUnauthorized: !credentials.allowUnauthorizedCerts,
 		json: true,
 	};
 	options = Object.assign({}, options, option);