Bump crc32c to version 2.7.1

[agriyakhetarpal]

Description

This PR bumps crc32c to the latest available version, 2.7.1. I'm updating this in accordance with zarr-developers/numcodecs#529, where we previously added this package in-tree (#4787, #4789), but they are requiring a later version now. The package has no dependencies that need to be updated or otherwise.

Checklists

• Add a CHANGELOG entry
• Add / update tests

[agriyakhetarpal]

I also planned to add https://github.com/LLNL/zfp (zfpy) but they don't have a source distribution available on PyPI yet: https://pypi.org/project/zfpy/#files. It is a dependency for numcodecs, albeit not a required one (but still good enough to test for). Should I create a dummy sdist for it, or perhaps we can experiment with the GitHub tarball until I request that they publish one for the next release? Adding the package would also block #4925, though, because they don't support NumPy v2 yet (LLNL/zfp#210), but there's a chance it might just work. I'll comment on that issue about both of these aspects. In the meantime, bumping just crc32c would here should suffice for numcodecs, since it seems to be required for the test suite (the tests that use it are not skipped if it isn't available), even though it's listed as an optional dependency.

[ryanking13]

Thanks!

[agriyakhetarpal]

Thanks for the review!