change language input type=file

It's not possible to translate "Choose file" and "no file chosen" labels, as those are native browser elements and depend on browser's language.

However, you may try some tricks like putting image instead of button or making file input transparent (and add text input below).
Browse through those answers to choose if any is suitable:

How to change the button text of <input type=“file” />?
Change default text in input type=“file”?