As of now, only up to 7.0 Update 2 is in the compatibility matrix for snapcenter 4.4. I have attached the screenshot. My advise would be - Do not upgrade.
If you have to go to vCenter 7.0 Update 3, then you must first upgrade the Snapcenter to 4.6 minimum.
You can also cross-check it via:
https://imt.netapp.com/matrix/