appiumtests: skip touch gesture tests in the CI
The test is too flaky in the CI, due to various reasons like Qt filtering out touch events for no reason. Skip it for now and enable it when there is a chance in the future.
Typical output when pointerinputtest fails:
sending touch_down at QPoint(100,100)
touch down 0
sending touch_up
qt.pointer.dispatch: skipping QEventPoint(id=0 ts=0 pos=0,0 scn=0,0 gbl=0,0 Released vel=0,0 press=0,0 last=0,0 Δ 0,0) : no target window