fix ci tests

[Cyan4973]

Some Github CI tests have started failing recently, as a consequence of updating the underlying ubuntu image.
Try to fix the created issues one by one in this PR, to end up on an all-green signal.

• clang-pgo : this test was tied to clang-14, which is no longer supported in latest ubuntu image. Use the "generic" clang instead, requiring installation of the companion profiler tool.
• meson-linux, cmake-build-and-check, make-external-compressor : require explicit installation of liblzma-dev package (no longer provided by default in the image)

[Cyan4973]

The zlib-wrapper error can also be reproduced locally, so it's not related to Github Actions VMs.
It's curious it started failing at the same time.
Maybe the library version changed, and modified a behavior ?

No clear explanation for the time being: the file example.c fails here .
It's a direct correspondence from a zlib test file.

edit : indeed, in more recent versions of zlib, the test changed, and now expects a different error code (Z_STREAM_END instead of Z_DATA_ERROR). to be fixed.

[Cyan4973]

All tests fixed, CI signal green.

I'm going to merge this, so that we can rebase ongoing PRs on top of it, and observe a clean green signal before merge.