zstd: Update to version 1.5.6

zstd: Update to version 1.5.6

- Update from version 1.5.5 to 1.5.6
- Update of rootfile
- Changelog
    1.5.6 (Mar 2024)
	api: Promote `ZSTD_c_targetCBlockSize` to Stable API by @felixhandte
	api: new `ZSTD_d_maxBlockSize` experimental parameter, to reduce streaming decompression memory, by @terrelln
	perf: improve performance of param `ZSTD_c_targetCBlockSize`, by @Cyan4973
	perf: improved compression of arrays of integers at high compression, by @Cyan4973
	lib: reduce binary size with selective built-time exclusion, by @felixhandte
	lib: improved huffman speed on small data and linux kernel, by @terrelln
	lib: accept dictionaries with partial literal tables, by @terrelln
	lib: fix CCtx size estimation with external sequence producer, by @embg
	lib: fix corner case decoder behaviors, by @Cyan4973 and @aimuz
	lib: fix zdict prototype mismatch in static_only mode, by @ldv-alt
	lib: fix several bugs in magicless-format decoding, by @embg
	cli: add common compressed file types to `--exclude-compressed`` by @daniellerozenblit
	cli: fix mixing `-c` and `-o` commands with `--rm`, by @Cyan4973
	cli: fix erroneous exclusion of hidden files with `--output-dir-mirror` by @felixhandte
	cli: improved time accuracy on BSD, by @felixhandte
	cli: better errors on argument parsing, by @KapJI
	tests: better compatibility with older versions of `grep`, by @Cyan4973
	tests: lorem ipsum generator as default backup content, by @Cyan4973
	build: cmake improvements by @terrelln, @sighingnow, @gjasny, @JohanMabille, @Saverio976, @gruenich, @teo-tsirpanis
	build: bazel support, by @jondo2010
	build: fix cross-compiling for AArch64 with lld by @jcelerier
	build: fix Apple platform compatibility, by @nidhijaju
	build: fix Visual 2012 and lower compatibility, by @Cyan4973
	build: improve win32 support, by @DimitriPapadopoulos
	build: better C90 compliance for zlibWrapper, by @emaste
	port: make: fat binaries on macos, by @mredig
	port: ARM64EC compatibility for Windows, by @dunhor
	port: QNX support by @klausholstjacobsen
	port: MSYS2 and Cygwin makefile installation and test support, by @QBos07
	port: risc-v support validation in CI, by @Cyan4973
	port: sparc64 support validation in CI, by @Cyan4973
	port: AIX compatibility, by @likema
	port: HP-UX compatibility, by @likema
	doc: Improved specification accuracy, by @elasota
	bug: Fix and deprecate ZSTD_generateSequences (#3981)

Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>