chore: update AztecBot's email address when squashing (#16652)

Fix to link commits to AztecBot

<img width="304" height="48" alt="image"
src="https://github.com/user-attachments/assets/8234b944-2c58-492d-80db-06fd6a3f0df6"
/>

Author: alexghr

scripts/merge-train/squash-pr.sh

@@ -23,7 +23,7 @@ is_fork=$(echo "$pr_info" | jq -r '.isCrossRepository')
 
 # We'll use AztecBot as the committer
 author_name="AztecBot"
-author_email="tech@aztecprotocol.com"
+author_email="[email protected].com"
 
 # Create a temporary worktree to do the squashing
 worktree_dir=$(mktemp -d)