Call silence_errors for every thread

[mulimoen]

Fixes error messages not being silenced in a multi-threaded setting as mentioned in https://github.com/aldanor/hdf5-rust/issues/155#issuecomment-1090189833

[aldanor]

• Looks good!
• Mention in the changelog?

(on a side note, I think we should switch to using once_cell... I guess this will be a part of a big overhaul once I get to it)

[mulimoen]

Added an entry to the changelog

[aldanor]

I guess clippy needs to be fixed first in one of the PRs so we can rebase the rest on it and the builds are green?