Test against juju 3.6/candidate + upgrade dpw to v23.0.5

[shayancanonical]

Issue

1. There's a new juju release candidate, on 3.6/candidate
2. There's a new dpw version (which we need to update to before Nov 21 to avoid failing tests)

Solution

1. Run nightly tests against juju 3.6/candidate
2. Upgrade to dpw v23.0.5

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.40%. Comparing base (3f31bbf) to head (f5e3aed).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #675   +/-   ##
=======================================
  Coverage   71.40%   71.40%           
=======================================
  Files          13       13           
  Lines        3189     3189           
  Branches      475      475           
=======================================
  Hits         2277     2277           
  Misses        797      797           
  Partials      115      115           

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[shayancanonical]

Sorry, realized that this PR does not update dpw in pyproject.toml and subsequently does not update the project poetry lock file. However, this will be automated in a separate PR by renovate