Update graphiql and its dependencies to the latest version on jsdelivr

[akand074]

No description provided.

[coveralls]

Coverage remained the same at 96.386% when pulling 35db2e0 on akand074:update_graphiql into 3ccd939 on graphql-python:master.

[akand074]

@syrusakbary I updated the versions to the latest available on jsdelivr, I wanted to bump up to 0.11.2 but it's not available on jsdelivr (other CDNs did).

I also noticed mako's template is identical to the render_graphiql file so I was going to share between the two files but looks like mako.py isn't used at all yet, so perhaps a change for later.

I did notice you can provide your own render_graphiql function which I'll likely use to keep my own hosted copy but good to keep this up to date. I'll make another PR when jsdelivr has the latest version unless you know how to get an update up.

[jimaek]

I just wanted to let you know that jsDelivr can pull files directly from npm and always have the latest versions.

http://cdn.jsdelivr.net/npm/graphiql/
http://cdn.jsdelivr.net/npm/graphiql@0.11.2/graphiql.min.js

[akand074]

Ah thanks @jimaek I saw that but for whatever reason I couldn't get it to build properly 😅 maybe will switch to use the NPM-based one