Unify python icon

[chargome]

https://github.com/getsentry/platformicons/blob/master/svg/python.svg and https://github.com/getsentry/platformicons/blob/master/svg_80x80/python.svg

should have the same style, probably the one that is displayed in https://www.python.org/community/logos/

A transparent background would be also nice to have!

ref https://github.com/getsentry/sentry-docs/issues/11176