This upgrades to the latest stable version of Haystack, 3.2.x, which is

compatible with Django 3.2 and 4.0.
There isn't a lot behind the scenes of this release, but it does address

some deprecation warnings that were shown in 4.0. There are a few bug

fixes behind the scenes for backends, but nothing stood out as being

especially notable for our uses. Mostly, this is a forward-looking

version bump.

Upgraded and verified this took care of deprecation warnings.
All unit tests pass.