Automate Discord Notification for New Releases (#4918)

* Create discord_notify.yml

Add GitHub Action for Discord release notifications

* Rename discord_notify.yml to discord-notify.yml

---------

Co-authored-by: Jim Fasarakis-Hilliard <d.f.hilliard@gmail.com>
Co-authored-by: srdtrk <59252793+srdtrk@users.noreply.github.com>

.github/workflows/discord-notify.yml

@@ -0,0 +1,16 @@
+name: Notify Discord on Release
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  notify:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Send Notification to Discord
+      uses: Ilshidur/action-discord@2.4.0
+      with:
+        args: "A new release of ibc-go has been tagged! View it here: ${{ github.event.release.html_url }}"
+        webhook: ${{ secrets.DISCORD_WEBHOOK }}
+