libbeat: use klauspost/compress for asset encoding and decoding

[mauri870]

Recently I did a small optimization in the asset decoding that reduces the memory used during beats initialization by 20% at #42180. Looking at the code I think we can improve the cpu time as well(5-10%) by simply switching from compress/zlib to klauspost/compress/zlib.

This will likely cause changes in all the autogenerated fields.go files in the repo after running a make update. I don't fully understand how the asset encoding works but I assume that if we change both encoder and decoder so that they are compatible than it shouldn't cause any problems.

[elasticmachine]

Pinging @elastic/elastic-agent-data-plane (Team:Elastic-Agent-Data-Plane)