Make installed-tests executable.

Meson tries to execute them directly, causing autopkgtests to fail with

FAIL: gtk-4.0/tools/settings.test (Child process exited with code 126)
FAIL: gtk-4.0/tools/simplify.test (Child process exited with code 126)

added 2 commits

• 251d70d0 - Make installed-tests executable.
• 35ed78e8 - Update change log.

Compare with previous version

Thanks, I've merged that manually in my pending debian/latest update (ubuntu/latest is currently outdated since the intend was for the situation to be temporary and just get back in sync with Debian)

closed