fix(gatsby-source-drupal): await async handleDeletedNode (#37435) (#37458)

await async handleDeletedNode

(cherry picked from commit e575a0a)

Co-authored-by: Tyler Barnes <tylerdbarnes@gmail.com>

Author: gatsbybot

packages/gatsby-source-drupal/src/gatsby-node.js

@@ -405,7 +405,7 @@ ${JSON.stringify(webhookBody, null, 4)}`
 
           for (const nodeSyncData of nodesToSync) {
             if (nodeSyncData.action === `delete`) {
-              handleDeletedNode({
+              await handleDeletedNode({
                 actions,
                 getNode,
                 cache,