ci(release): purge JSDelivr cache on release (#25687)

.github/workflows/release.yml

@@ -61,4 +61,21 @@ jobs:
           git add .
           git commit -m "chore(): update package lock files"
           git push
+      # Purge the JSDeliver CDN cache so
+      # component playgrounds always load
+      # the latest version of Ionic.
+      - name: Purge JSDelivr Cache
+        run: | 
+          curl -X POST \
+            https://purge.jsdelivr.net/ \
+            -H 'cache-control: no-cache' \
+            -H 'content-type: application/json' \
+            -d '{
+          "path": [
+            "/npm/@ionic/core@6/dist/ionic/ionic.esm.js",
+            "/npm/@ionic/core@latest/dist/ionic/ionic.esm.js",
+            "/npm/@ionic/core@6/css/ionic.bundle.css,
+            "/npm/@ionic/core@latest/css/ionic.bundle.css
+          ]}'
+