Merge pull request #1160 from james-garner-canonical/2024-10/feat/replace-existing-w-client-only

#1160

#### Description

Moving towards the goal of having schemas and generated code in `python-libjuju` only for the latest supported Juju versions (`3.1.9`, `3.3.6`, `3.5.4`, `3.5.3`), and using client only schemas (see #1099), this PR replaces the existing `3.1.X` and `3.3.0` schemas with their client-only counterparts.

#### QA Steps

Tests pass, but is there anything else we should check here?

Author: jujubot