Log Message:
zstd: update to 1.5.5.

v1.5.5 (Apr 2023)
fix: fix rare corruption bug affecting the high compression mode, reported by \ 
@danlark1 (#3517, @terrelln)
perf: improve mid-level compression speed (#3529, #3533, #3543, @yoniko and \ 
#3552, @terrelln)
lib: deprecated bufferless block-level API (#3534) by @terrelln
cli: mmap large dictionaries to save memory, by @daniellerozenblit
cli: improve speed of --patch-from mode (~+50%) (#3545) by @daniellerozenblit
cli: improve i/o speed (~+10%) when processing lots of small files (#3479) by \ 
@felixhandte
cli: zstd no longer crashes when requested to write into write-protected \ 
directory (#3541) by @felixhandte
cli: fix decompression into block device using -o, reported by @georgmu (#3583)
build: fix zstd CLI compiled with lzma support but not zlib support (#3494) by \ 
@Hello71
build: fix cmake does no longer require 3.18 as minimum version (#3510) by @kou
build: fix MSVC+ClangCL linking issue (#3569) by @tru
build: fix zstd-dll, version of zstd CLI that links to the dynamic library \ 
(#3496) by @yoniko
build: fix MSVC warnings (#3495) by @embg
doc: updated zstd specification to clarify corner cases, by @Cyan4973
doc: document how to create fat binaries for macos (#3568) by @rickmark
misc: improve seekable format ingestion speed (~+100%) for very small chunk \ 
sizes (#3544) by @Cyan4973
misc: tests/fullbench can benchmark multiple files (#3516) by @dloidolt