Unbreak Viewperf by reverting "util: use crc32_z instead of crc32 and bump zlib dep to 1.2.9"

It breaks apps shipping their own copy of zlib, such as Viewperf.
If we use crc32_z, Viewperf is unable to start because it's an undefined
symbol.

This reverts commit 010272b62e.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28233>

meson.build

@@ -1541,7 +1541,8 @@ else
   dep_clock = cc.find_library('rt')
 endif
 
-dep_zlib = dependency('zlib', version : '>= 1.2.9',
+# IMPORTANT: We can't upgrade Zlib beyond 1.2.5 because it would break Viewperf.
+dep_zlib = dependency('zlib', version : '>= 1.2.3',
                       allow_fallback: true,
                       required : get_option('zlib'))
 if dep_zlib.found()