textScaleFactor is deprecated and shouldn't be used.

[lehoangkhang4869]

This package use textScaleFactor but I see warning:

• 'textScaleFactor' is deprecated and shouldn't be used. Use textScaler instead. Use of textScaleFactor was deprecated in preparation for the upcoming nonlinear text scaling support. This feature was deprecated after v3.12.0-2.0.pre.
• Please fix that @@, it will become a bug in the future!

[gauravmehta13]

Please create a PR, should be pretty easy.