doc: note about mutation of parametrized values

[ankostis]

Fix #7514 by augmenting Note with behaviour when parametrized values are mutated
(changes are reflected in subsequent test-case calls).

[ankostis]

Oups, ..my apologies, i forgot i had dev access in pytest, and github-UI opened my new PR in the original repo.

Sgould i delete it (if am i allowed to) and do the proper thing from my fork?

[The-Compiler]

Oups, ..my apologies, i forgot i had dev access in pytest, and github-UI opened my new PR in the original repo.

I'd say don't worry about it. We can always delete the branch after the PR is merged.

[ankostis]

I'm seeing some failures in Windows...could it be that my last commit message contains the non-ASCII char §?

[The-Compiler]

@ankostis That's not related to your change, most likely a change in the GitHub Actions environment. I opened #7518.

[bluetech]

Thanks @ankostis!

Since the Windows failure are unrelated, I am going to force-merge it.