Qt6: Update to 6.8.2

January 31, 2025

We have released Qt 6.8.2 today. As a patch release, Qt 6.8.2 does not
introduce new features but contains more than 450 bug fixes, security
updates, and other improvements on top of Qt 6.8.1 release. See more
information about the most important changes and bug fixes from the
Qt 6.8.2 release note.

Announcement:
https://www.qt.io/blog/qt-6.8.2-released

Release note:
https://code.qt.io/cgit/qt/qtreleasenotes.git/about/qt/6.8.2/release-note.md

MFH: 2025Q1
Security: 72b8729e-e134-11ef-9e76-4ccc6adda413
(cherry picked from commit 8a35ffe0dbe55b3c27d3ec722aa7444bce1dcab0)