Replace deprecated typing.re with typing

[nifadyev]

Bug report

What's wrong

typing.re is deprecated and will be removed in python 3.13

dotenv_linter/visitors/fst/names.py:3
  /dotenv-linter/dotenv_linter/visitors/fst/names.py:3: DeprecationWarning: typing.re is deprecated, import directly from typing instead. typing.re will be removed in Python 3.13.
    from typing.re import Pattern

How is that should be

Use from typing import Pattern instead

[sobolevn]

Good idea!