…be optional (graphql-python#1455)

* adding optional_fields to enforce fields to be optional

* adding support for all

* adding unit tests

* Update graphene_django/rest_framework/mutation.py

Co-authored-by: Kien Dang <kiend@pm.me>

* linting

* linting

* add missing import

---------

Co-authored-by: Kien Dang <kiend@pm.me>

* Fix Star Wars spaceship name

* Fix some typos in comments

* Typo fixes

* More typo fixes

…python#1458)

* Update GraphiQL docs URL in docs/settings

And deduplicate link declaration.

* Support displaying deprecated input fields in GraphiQL docs

…sri param to render_graphiql function of the GraphQlView (graphql-python#1418) (graphql-python#1460)

* Fix test Client headers for Django 4.2

* Lazy import pkg_resources

since it could be quite heavy

* Remove use of pkg_resources altogether