Fix PR-comment GitHub Action by using our forked version.

[daniel-k]

I had to remove a problematic type annotation in the docstring of EnlyzeClient.get_appliances() as well, because that has led to a failure building the docs. For consistency, I've also removed a similar annotation in the same class. Both annotation are not strictly necessary, so this shouldn't be a big deal.

[github-actions]

Coverage results

This is the coverage report for commit 374f6d3

Name                                                                                Stmts   Miss  Cover   Missing
-----------------------------------------------------------------------------------------------------------------
.tox/py/lib/python3.12/site-packages/enlyze/__init__.py                                 4      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/api_clients/base.py                        65      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/api_clients/production_runs/client.py      20      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/api_clients/production_runs/models.py      51      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/api_clients/timeseries/client.py           19      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/api_clients/timeseries/models.py           34      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/auth.py                                    13      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/client.py                                  86      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/constants.py                                6      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/errors.py                                   3      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/models.py                                 108      0   100%
.tox/py/lib/python3.12/site-packages/enlyze/validators.py                              38      0   100%
-----------------------------------------------------------------------------------------------------------------
TOTAL                                                                                 447      0   100%

4 empty files skipped.

[daniel-k]

For some context: CI seems to have broken by itself since the last PR some time ago. When I opened #35 I found CI failing for reasons unrelated to my actual PR. This PR here fixes all current CI issues.