Add wildcard so that all .env files are ignored - Python.gitignore

[HeyThereSmileMore]

Reasons for making this change:

So that all files starting with .env are ignored.

Example why this is useful:

With python 3.11 there is now native TOML support, so it is a valid use case to have .env.toml files. Additionally, it would be useful if more than one ".env" file is present, like ".env_topic1" for example.

Current status The problem with the current "gitignore" is, that these files are not ignored.

Solution With the wildcard .env* they are ignored.

Links to documentation supporting these rule changes: python 3.11 tomlib native support

The Dart gitignore also has the wildcard to ignore all .env* files and from my perspective it would be useful for python too

BTW: If something is missing or not correct, please let me know, this is my first pull request to this repo