Exclude `_sysconfigdata__linux_x86_64.pyc` file

[wolfv]

The pyc file contains the $PREFIX but apparently not in a way that is detected / or replaceable by conda / rattler (Python marshals strings without \0 delimiter into the bytecode IIUC).

It might be better to not add this file at all so that it is regenerated? Or scramble it?

We hit a problem when installing python 3.11 - because we are restoring the mtime in rattler and the pyc file does not get regenerated. We're currently looking for solutions how to solve this cleanly.

We should, probably, change the mtime / not restore it upon installation of files where we change some contents.