fix: GraphiQL Explorer Plugin CDN URL (#101)

* Fix GraphiQL explorer plugin CDN URL

* Add changelog entry

Author: schwma

CHANGELOG.md

@@ -19,6 +19,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Changed GraphiQL Explorer Plugin CDN URL due to upstream renaming
+
 ### Removed
 
 ## Version 0.6.0 - 2023-06-23

app/graphiql.html

@@ -25,7 +25,7 @@
     <script crossorigin src="https://unpkg.com/react-dom@18/umd/react-dom.production.min.js"></script>
 
     <script crossorigin src="https://unpkg.com/graphiql/graphiql.min.js"></script>
-    <script crossorigin src="https://unpkg.com/@graphiql/plugin-explorer/dist/graphiql-plugin-explorer.umd.js"></script>
+    <script crossorigin src="https://unpkg.com/@graphiql/plugin-explorer/dist/index.umd.js"></script>
 
     <script>
       const fetcher = GraphiQL.createFetcher({ url: '' })