Unpin fsspec
# What does this PR do?

The `fsspec` team has made a patch release (2022.8.2) to fix their issue:
- fsspec/filesystem_spec#1032

They yanked both 2022.8.0 and 2022.8.1, so no need to pin to exclude them.

Follows:
- #18837

_The documentation is not available anymore as the PR was closed or merged._