Build/Test Tools: Replace abandoned third party action.

The `wow-actions/welcome` action has not been updated for over 2 years and is currently configured to run on `Node20`. With GitHub now actively removing support for Node.js 20.x within the GitHub Actions environment, any action explicitly using `Node20` will break.

This replaces `wow-actions/welcome` with the `actions/first-interaction` action, which is an action officially maintained by GitHub and offers the same functionality.

Props khokansardar, mukesh27, desrosj.
Fixes #65432.

git-svn-id: https://develop.svn.wordpress.org/trunk@62486 602fd350-edb4-49c9-b593-d223f7449a82

Author: desrosj

.github/workflows/pull-request-comments.yml

@@ -30,11 +30,10 @@ jobs:
     if: ${{ github.repository == 'WordPress/wordpress-develop' && github.event_name == 'pull_request_target' }}
     steps:
       - name: Post a welcome comment
-        uses: wow-actions/welcome@68019c2c271561f63162fea75bb7707ef8a02c85 # v1.3.1
+        uses: actions/first-interaction@1c4688942c71f71d4f5502a26ea67c331730fa4d # v3.1.0
         with:
-          FIRST_PR_REACTIONS: 'hooray'
-          FIRST_PR_COMMENT: >
-            Hi @{{ author }}! 👋
+          pr_message: >
+            Hi there! 👋
 
 
             Thank you for your contribution to WordPress! 💖