0.4.2 build on ubuntu 22.04 can't import PySide2.QtSvg

[deeplow]

0.4.2 made use of QtSvg for adding icons. However we missed one thing. On debian platforms we are likely lacking a dependency for this.

So we get the following error when running the installed Dangerzone version on ubuntu 22.04:

user@dangerzone:~/dangerzone$ ./dev_scripts/dangerzone
Traceback (most recent call last):
  File "/home/user/dangerzone/dangerzone/gui/main_window.py", line 19, in <module>
    from PySide6 import QtCore, QtGui, QtSvg, QtWidgets
  File "/usr/lib/python3/dist-packages/shiboken2/files.dir/shibokensupport/__feature__.py", line 142, in _import
    return original_import(name, *args, **kwargs)
ModuleNotFoundError: No module named 'PySide6'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/user/dangerzone/./dev_scripts/dangerzone", line 11, in <module>
    import dangerzone
  File "/home/user/dangerzone/dangerzone/__init__.py", line 16, in <module>
    from .gui import gui_main as main
  File "/home/user/dangerzone/dangerzone/gui/__init__.py", line 30, in <module>
    from .main_window import MainWindow
  File "/usr/lib/python3/dist-packages/shiboken2/files.dir/shibokensupport/__feature__.py", line 142, in _import
    return original_import(name, *args, **kwargs)
  File "/home/user/dangerzone/dangerzone/gui/main_window.py", line 21, in <module>
    from PySide2 import QtCore, QtGui, QtSvg, QtWidgets
ImportError: cannot import name 'QtSvg' from 'PySide2' (/usr/lib/python3/dist-packages/PySide2/__init__.py)
user@dangerzone:~/dangerzone$ dangerzone 
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/dangerzone/gui/main_window.py", line 19, in <module>
    from PySide6 import QtCore, QtGui, QtSvg, QtWidgets
  File "/usr/lib/python3/dist-packages/shiboken2/files.dir/shibokensupport/__feature__.py", line 142, in _import
    return original_import(name, *args, **kwargs)
ModuleNotFoundError: No module named 'PySide6'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/dangerzone", line 33, in <module>
    sys.exit(load_entry_point('dangerzone==0.4.1', 'console_scripts', 'dangerzone')())
  File "/usr/bin/dangerzone", line 25, in importlib_load_entry_point
    return next(matches).load()
  File "/usr/lib/python3.10/importlib/metadata/__init__.py", line 171, in load
    module = import_module(match.group('module'))
  File "/usr/lib/python3.10/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 883, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "/usr/lib/python3/dist-packages/dangerzone/__init__.py", line 16, in <module>
    from .gui import gui_main as main
  File "/usr/lib/python3/dist-packages/dangerzone/gui/__init__.py", line 30, in <module>
    from .main_window import MainWindow
  File "/usr/lib/python3/dist-packages/shiboken2/files.dir/shibokensupport/__feature__.py", line 142, in _import
    return original_import(name, *args, **kwargs)
  File "/usr/lib/python3/dist-packages/dangerzone/gui/main_window.py", line 21, in <module>
    from PySide2 import QtCore, QtGui, QtSvg, QtWidgets
ImportError: cannot import name 'QtSvg' from 'PySide2' (/usr/lib/python3/dist-packages/PySide2/__init__.py)