meson: Fix warning about extract_all_objects usage

We use this because of a meson bug that was fixed in 0.52:

https://mesonbuild.com/Release-notes-for-0-52-0.html#improved-support-for-static-libraries

Bump the requirement and remove the extract_all_objects workaround.
This gets rid of a meson warning:

WARNING: extract_all_objects called without setting recursive
keyword argument. Meson currently defaults to
non-recursive to maintain backward compatibility but
the default will be changed in the future.