Add support for psychopy 2023.2.0

[lkeegan]

Add support for psychopy 2023.2.0

• replace explicit PyQt5 dependency with qtpy wrapper library
  • this allows the same codebase to work with whichever version of pyqt is installed
  • as of 2023.2.0 psychopy installs PyQt6
• explicitly use psychopy.gui.qtgui instead of psychopy.gui
  • workaround for bug in psychopy pyqt detection
• exclude "transparent" from list of psychopy colorNames if present
  • this was added to the list at some point in psychopy
• add CI jobs with pinned older psychopy versions as regression tests
• account for PyQt5/6 difference in QKeySequence in ModalWidgetTimer
• update CI linux system dependencies for Qt6
• resolves https://github.com/ssciwr/vstt/issues/243

[codecov[bot]]

Codecov Report

Merging #244 (d198822) into main (5265119) will increase coverage by 0.00%. The diff coverage is 95.45%.

@@           Coverage Diff           @@
##             main     #244   +/-   ##
=======================================
  Coverage   89.64%   89.65%           
=======================================
  Files          19       19           
  Lines        1545     1546    +1     
=======================================
+ Hits         1385     1386    +1     
  Misses        160      160           

Files Changed	Coverage Δ
src/vstt/__main__.py	0.00% <0.00%> (ø)
src/vstt/display_widget.py	100.00% <100.00%> (ø)
src/vstt/gui.py	78.37% <100.00%> (+0.11%)	:arrow_up:
src/vstt/meta_widget.py	100.00% <100.00%> (ø)
src/vstt/results_widget.py	93.47% <100.00%> (+0.07%)	:arrow_up:
src/vstt/trial.py	73.58% <100.00%> (ø)
src/vstt/trials_widget.py	79.33% <100.00%> (ø)
src/vstt/vis.py	95.32% <100.00%> (-0.03%)	:arrow_down:

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication