Update dependency graphql to v2.6.3

Author: renovate[bot]

Gemfile.lock

@@ -144,7 +144,7 @@ GEM
       rake (~> 13.3)
     googleapis-common-protos-types (1.22.0)
       google-protobuf (~> 4.26)
-    graphql (2.6.2)
+    graphql (2.6.3)
       base64
       fiber-storage
       logger