update to latest Turing.jl

[jClugstor]

Checklist

• Appropriate tests were added
• Any code changes were done in a way that does not break public API
• All documentation related to code changes were updated
• The new code follows the
  contributor guidelines, in particular the SciML Style Guide and
  COLPRAC.
• Any new documentation only uses public API

Additional context

Update Turing to fix compatibility issues.

[jClugstor]

Tests, pass, but CodeCov doesn't run. I think that's expected because of the CodeCov changes happening?

[ChrisRackauckas]

datafit tests don't pass?

[jClugstor]

I think they don't run if the Core tests don't completely pass. Since the codecov test didn't pass, the datafit tests never actually ran.

[jClugstor]

Should I just get rid of codecov in the CI?

[ChrisRackauckas]

It should already be disabled.

[jClugstor]

Ok so the datafit tests ran, but they took so long that it canceled out?
Hmm...

[ChrisRackauckas]

Is someething like the iteration limit not being respected?

[jClugstor]

The tests are getting dt under epsilon and hitting maxiters now, which I can confirm doesn't happen with Turing 0.30. There was just a Turing patch, I'll try that.