Update zlib-ng to 2.1.5

[bdraco]

Checklist

• Pull request details were added to CHANGELOG.rst
• Documentation was updated (if needed)

[rhpvorderman]

I am currently waiting for some changes in python-isal to shake out. Currently multithreaded solutions are added. I plan to port these to python-zlib-ng and make a new release then. EDIT: what I mean is that these changes are now already released in python-isal, and that I am waiting a bit to see if there are any bugs in the implementation I missed. Then I can port the code.

[bdraco]

Great. Please let me know if there is anything you need tested in production that applies to this library.

The primary use case I have to test is using this library for an aiohttp websocket to reduce latency

Thanks!

[bdraco]

@rhpvorderman Any chance you can take a look at this sooner as it looks like the old zlib-ng version is causing problems with older CPUs in home-assistant/core#105254 ?

Thanks!

[rhpvorderman]

Sure. I just merged #21 with the version bump and some other commits. I will try to make a release today, also to get the BSD patch in.

[bdraco]

Thank you!