PR: Update python-lsp-server subrepo and change CI Python versions

[dalthviz]

Description of Changes

• Currently the python-lsp-server subrepo is pointing to the v1.6.0 tag (was needed to prevent errors on the CI tests while also being able to build the conda-based installers). This makes the subrepo point again to the develop branch
• Change the Python version we use to test to Python 3.8 and Python 3.10

Affirmation

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[dalthviz]

Note: Needs changes on the python-lsp-server (be sure the autoimport plugin is actually disabled by default)

[ccordoba12]

@dalthviz, please sync our subrepo with my branch on this PR: python-lsp/python-lsp-server#300. I verified locally that it fixes our tests here.

[ccordoba12]

Thanks for this @dalthviz! This is almost ready, except for the new problem of test_no_update_outline, which is consistently failing on Linux and Python 3.10 using pip packages. What do you propose to do about it?

[dalthviz]

Will check what is happening. Also seems like an error is being triggered somewhere beside the test failing due to the assert?- https://github.com/spyder-ide/spyder/actions/runs/3449114058/jobs/5785585197#step:15:6037 :

Traceback (most recent call last):
  File "/home/runner/work/spyder/spyder/spyder/api/widgets/auxiliary_widgets.py", line 57, in changeEvent
    self.sig_window_state_changed.emit(self.windowState())
TypeError: SpyderWindowWidget.sig_window_state_changed[WindowStates].emit(): argument 1 has unexpected type 'WindowStates'

[ccordoba12]

Also seems like an error is being triggered somewhere beside the test failing due to the assert?

Ok, I think that could be the source of the test failure at the end. You can try to change the signature of sig_window_state_changed from

sig_window_state_changed = Signal(Qt.WindowStates)

to

sig_window_state_changed = Signal(object)

and the same for the Slot argument of OutlineExplorerWidget._handle_undocked_window_state. That should solve the problem.

[ccordoba12]

Thanks @dalthviz for your work on this!

Note: The failures in our tests are only related to the conda-based installers.