Bump version to 6.13.0


Change-Id: Ib816ed20307644db9db01fcc1b0ca475e36f191f
Reviewed-by: Qt Submodule Update Bot <qt_submodule_update_bot@qt-project.org>
commit4805088de01a475644083ea064627ff8d719faa7
parent8986ea355bedeb1976595dd45a83b937ee9dfcf5
authorJani Heikkinen <jani.heikkinen@qt.io>
committerJani Heikkinen <jani.heikkinen@qt.io>
commit timeThu, 4 Jun 2026 06:20:56 +0000