Merge pull request 'Fixed gql playground' (#322) from 1.1.0_fix_playground into 1.1.0

Reviewed-on: sh-edraft.de/kd_discord_bot#322
Reviewed-by: Ebola-Chan <nick.jungmann@gmail.com>

kdb-bot/src/bot_api/controller/graphql_controller.py

@@ -1,5 +1,5 @@
 from ariadne import graphql_sync
-from ariadne.explorer import ExplorerGraphiQL
+from ariadne.explorer import ExplorerPlayground
 from cpl_core.configuration import ConfigurationABC
 from cpl_core.environment import ApplicationEnvironmentABC
 from flask import request, jsonify
@@ -30,7 +30,7 @@ class GraphQLController:
         if self._env.environment_name != "development":
             return "", 403
 
-        return ExplorerGraphiQL().html(None), 200
+        return ExplorerPlayground().html(None), 200
 
     @Route.post(f"{BasePath}")
     @Route.authorize(by_api_key=True)