v2.2.5
425439062b114a0f6cf625022c41d929c7e879f9

https://github.com/zlib-ng/zlib-ng/releases/tag/2.2.5

We have removed the following folders from our local copy as these files are not needed for our compilation:

- zlib-ng/.github/
- zlib-ng/doc/
- zlib-ng/test/
- zlib-ng/arch/s390/self-hosted-builder/

