Create post release workflow

.github/workflows/post_release.yml

@@ -0,0 +1,20 @@
+name: Post release
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  post_release:
+    runs-on: 'ubuntu-24.04'
+
+    steps:
+      - name: Update website
+        run: |
+          curl --fail -L \
+          -X POST \
+          -H "Accept: application/vnd.github+json" \
+          -H "Authorization: Bearer ${{ secrets.MIHON_BOT_TOKEN }}" \
+          -H "X-GitHub-Api-Version: 2022-11-28" \
+          https://api.github.com/repos/mihonapp/website/dispatches \
+          -d '{"event_type":"app_release"}'