Generate Python bindings with PySide2 5.15.4

[YakoYakoYokuYoku]

Thanks for submitting a pull request! Please provide enough information so that others can review your pull request. Additionally, make sure you've done all of these things:

• [x] I've followed the contributing guidelines to the best of my understanding
• [x] I've read and understood the contributing guidelines
• [x] I've formatted my code according to Natron's code style
• [x] I've searched the pull requests tracker to ensure that this PR is not a duplicate

PR Description

What type of PR is this? (Check one of the boxes below)

• [x] Breaking change (fix or feature that would cause existing functionality to change)

What does this pull request do?

Version 5.15.4 of PySide2 has some incompatibilities with previous versions, for instance the absence of the qapp_macro.h header. Compiling Natron with it results in failure, so this PR has the generated sources for this release.

Show a few screenshots (if this is a visual change)

N/A.

Have you tested your changes (if applicable)? If so, how?

By building and running Natron.

Futher details of this pull request

This might or might not work with previous PySide2 releases, so if you are using them check this PR out or revert this change in case of merge.

[rodlie]

So, this will break compatibility with previous PySide2/Qt 5.15 (and older) releases? What are we compatible with before this commit? (IMHO we should try to be compatible with 5.12-5.15, within reason).

[YakoYakoYokuYoku]

I did not test with previous releases so I can't tell and before this commit we were compatible with at least PySide2 5.15.2. But I'm against to provide support with versions previous to Qt 5.15 as all of them have been discontinued (see Qt 5.12.12) and Qt 5.15 is the only version of Qt5 that has open source releases and still being worked on (either officially or in the KDE forks) due to the new Qt licensing of LTS.

[devernay]

PySide 5.15.3 also requires this

[devernay]

The linux docker build image has PySide2 5.15.2.1 installed through pip. We need to check if this PR builds with it.

[YakoYakoYokuYoku]

PySide 5.15.3 also requires this

There's #803 for generating Python bindings inside QMake 5.15 and I prefer that over this PR (QMake 4 seems to not cooperate with it though it works just fine with the in repo sources).

[rodlie]

Ubuntu 22.04 has Qt 5.15.3, but uses PySide 5.15.2. So this might break there, can check.

EDIT: Yes, it breaks on Ubuntu 22.04.

There's https://github.com/NatronGitHub/Natron/pull/803 for generating Python bindings inside QMake 5.15 and I prefer that over this PR

Probably a good idea for Qt5.

[YakoYakoYokuYoku]

Well I'll go forward with #803, closing then.