ci: Run gnome-shell tests with the timeout multiplier set to 5
Sometimes the test runners are saturated with other work. Bump the test timeouts by a multiplier of 5 with the hope that they now will be much more likely to have time to finish in time.
Sometimes the test runners are saturated with other work. Bump the test timeouts by a multiplier of 5 with the hope that they now will be much more likely to have time to finish in time.