Post PRs to a thread instead

.github/workflows/discord-pr-notify.yml

@@ -11,11 +11,10 @@ jobs:
     if: github.head_ref != 'changeset-release/main'
     steps:
       - name: Send Discord Notification
-        uses: Ilshidur/action-discord@master
-        with:
-          args: |
-            🚀 **New PR:** ${{ github.event.pull_request.title }}
-            🔗 <${{ github.event.pull_request.html_url }}>
-            👤 **Author:** ${{ github.event.pull_request.user.login }}
-        env:
-          DISCORD_WEBHOOK: ${{ secrets.DISCORD_WEBHOOK }}
+        run: |
+          curl -X POST ${{ secrets.DISCORD_WEBHOOK }} \
+          -H "Content-Type: application/json" \
+          -d '{
+            "content": "🚀 **New PR:** ${{ github.event.pull_request.title }}\n🔗 <${{ github.event.pull_request.html_url }}>\n👤 **Author:** ${{ github.event.pull_request.user.login }}",
+            "thread_name": "${{ github.event.pull_request.title }} by ${{ github.event.pull_request.user.login }}"
+          }'