Upgrade zlib

[adamjstewart]

The zlib version used during building is not compatible with Apple Clang 17.0.0 on macOS Tahoe. I see errors like:

  ERROR: /private/var/folders/jv/cgkfvslj6nq1l7cw0c8c_8gm0000gn/T/spack9l9gotwq/_bazel_Adam/e634232a13c636b9e832565593c25887/external/zlib/BUILD.bazel:37:11: Compiling zutil.c [for tool] failed: (Exit 1): cc_wrapper.sh failed: error executing CppCompile command (from target @@zlib//:zlib) external/bazel_tools~cc_configure_extension~local_config_cc/cc_wrapper.sh -U_FORTIFY_SOURCE -fstack-protector -Wall -Wthread-safety -Wself-assign -Wunused-but-set-parameter -Wno-free-nonheap-object ... (remaining 34 arguments skipped)

  Use --sandbox_debug to see verbose messages from the sandbox and retain the sandbox build root for debugging
  In file included from external/zlib/zutil.c:8:
  external/zlib/zutil.h:170:11: warning: 'OS_CODE' macro redefined [-Wmacro-redefined]
    170 | #  define OS_CODE 19
        |           ^
  external/zlib/zutil.h:141:11: note: previous definition is here
    141 | #  define OS_CODE  7
        |           ^
  In file included from external/zlib/zutil.c:10:
  In file included from external/zlib/gzguts.h:21:
  In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/stdio.h:61:
  /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/_stdio.h:322:7: error: expected identifier or '('
    322 | FILE    *fdopen(int, const char *) __DARWIN_ALIAS_STARTING(__MAC_10_6, __IPHONE_2_0, __DARWIN_ALIAS(fdopen));
        |          ^
  external/zlib/zutil.h:147:33: note: expanded from macro 'fdopen'
    147 | #        define fdopen(fd,mode) NULL /* No fdopen() */
        |                                 ^
  /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/17/include/__stddef_null.h:26:16: note: expanded from macro 'NULL'
     26 | #define NULL ((void*)0)
        |                ^
  In file included from external/zlib/zutil.c:10:
  In file included from external/zlib/gzguts.h:21:
  In file included from /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/stdio.h:61:
  /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/_stdio.h:322:7: error: expected ')'
  external/zlib/zutil.h:147:33: note: expanded from macro 'fdopen'
    147 | #        define fdopen(fd,mode) NULL /* No fdopen() */
        |                                 ^
  /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/clang/17/include/__stddef_null.h:26:16: note: expanded from macro 'NULL'
     26 | #define NULL ((void*)0)
        |                ^
  /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/_stdio.h:322:7: note: to match this '('

[czgdp1807]

Already done as a part of #60 (merged). Feel free to close it @adamjstewart.