The flite plugin for QtSpeech wasn't tested on CI as the development
files weren't installed.
Pick-to: 6.8
Change-Id: Ieefe42f67009b99cc95f54567f224972d12c1538
Reviewed-by: Axel Spoerl <axel.spoerl@qt.io>
Reviewed-by: Tim Blechmann <tim.blechmann@qt.io>
(cherry picked from commit fb878af9e7)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
(cherry picked from commit 37880472c7)
6b14b80e61