chore: bump Python interpreter version to 3.10 in Pipfile

Python 3.7 is a bit too obsolete (at the time of writing).
Python 3.10 seems a better choice as a Python interpreter version for setting up the development environment.

Moreover, version 3.7 is reaching end-of-life in a month: https://devguide.python.org/versions/

Author: marcofavorito

Pipfile

@@ -25,4 +25,4 @@ types-click = "*"
 vulture = ">=2.3,<2.4"
 
 [requires]
-python_version = "3.7"
+python_version = "3.10"