deps: update zlib to upstream 8603eee

[targos]

Updated as described in doc/guides/maintaining-zlib.md.

I need help to fix a compiler error:

In file included from ../../deps/zlib/adler32_simd.c:54:
../../deps/zlib/adler32_simd.c: In function ‘adler32_simd_’:
/usr/lib/gcc/x86_64-redhat-linux/8/include/tmmintrin.h:112:1: error: inlining failed in call to always_inline ‘_mm_maddubs_epi16’: target specific option mismatch
 _mm_maddubs_epi16 (__m128i __X, __m128i __Y)
 ^~~~~~~~~~~~~~~~~
../../deps/zlib/adler32_simd.c:120:34: note: called from here
             const __m128i mad2 = _mm_maddubs_epi16(bytes2, tap2);
                                  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

[richardlau]

FWIW there's #33044 that attempted to rework the zlib.gyp file to more closely follow the structure of the gn file (e.g. targets, defines, etc.) in a similar way to how we handle V8. It reportedly fixes the unofficial 32-bit x86 builds (#33019 (comment)) but I'm close to abandoning it as I don't really have time to investigate the drop in benchmarks.

[targos]

The build breaks on Windows. It seems to conflict with the zlib internal to V8:

v8_zlib.lib(cpu_features.obj) : error LNK2005: cpu_check_features already defined in zlib.lib(cpu_features.obj) [D:\a\node\node\node_mksnapshot.vcxproj]
v8_zlib.lib(cpu_features.obj) : error LNK2005: cpu_check_features already defined in zlib.lib(cpu_features.obj) [D:\a\node\node\mkcodecache.vcxproj]

[targos]

any idea?

[targos]

Replaced with #41745