Add associated_data to encrypt/decrypt transit endpoints

[JordanStopford]

This resolves #1107 raised by Google/tink

I didn't see any tests for any of the other params to encrypt_data/decrypt_data so haven't added any for the new param as it's just passed through to Vault

[briantist]

Thanks for submitting this! Haven't reviewed fully yet.
Could you rebase to get the testing changes in #1105?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.66%. Comparing base (b61d05d) to head (296e86d).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1108   +/-   ##
=======================================
  Coverage   87.66%   87.66%           
=======================================
  Files          66       66           
  Lines        3227     3227           
=======================================
  Hits         2829     2829           
  Misses        398      398           

Files	Coverage Δ
hvac/api/secrets_engines/transit.py	88.74% <ø> (ø)

[JordanStopford]

Done!

[briantist]

@JordanStopford it looks like the Ci failed last time this ran. Could you rebase or merge changes from main since it's been a while? I can't see the logs anymore so I'm not certain what was failing, but let's see! We should be able to get this merged quickly once it passes.

[JordanStopford]

@briantist I've merged everything now so hopefully it all passes!

[briantist]

looks like there's just a few lint issues (flake8), could you get those fixed up? you can run the linters locally to help catch these things sooner, which helps reduce turnaround time

[JordanStopford]

@briantist I've fixed the linting errors now, sorry about that!