Every time I swipe up to the control center on my iPad it opens the home app

Swiping down from the upper-right corner of the screen opens the iPad Control Centre.

Swiping upwards from the bottom edge of the screen is an entirely different gesture - as this will expose the Dock, or continuing the swipe from the bottom edge to the centre, will open the App Switcher.

Go into settings scroll down until you see the search bar, type voice control and turn it off. Let me know if this works.