msgpack-cpp: upgrade 4.1.1 -> 6.1.0

Changelog:

- Remove dependency on boost in chrono.hpp (#1076)
- Add support for std::variant behavior (#1075)
- Fix msgpack::type::variant behavior to respect MessagePack format (#1071)
- Add rebind allocators (#1065)
- Change CMake package name of C++ library to msgpack-cxx (#1054)
- Unified all C++ package, library, cmake, tarball name become msgpack-cxx.
- Change CMake package name of C++ library to msgpackc-cxx (#1045, #1048)
- Fix config for new MSVC preprocessor (#1040)
- Fix compile error that direct inclusion of chrono with MSGPACK_NO_BOOST (#1038)
- Fix noexcept on zone (#1030)
- Improve cmake support (#1028, #1032)
- Improve CI (#1023)
- Improve supporting platform (#1021)
- Refine double/float packing (#1018)
- Refine include files dependency (#1011)

Signed-off-by: alperak <alperyasinak1@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-devtools/msgpack/msgpack-cpp_6.1.0.bb

@@ -8,7 +8,7 @@ LIC_FILES_CHKSUM = "file://NOTICE;md5=7a858c074723608e08614061dc044352 \
                    "
 
 SRC_URI = "https://github.com/msgpack/msgpack-c/releases/download/cpp-${PV}/msgpack-cxx-${PV}.tar.gz"
-SRC_URI[sha256sum] = "8115c5edcf20bc1408c798a6bdaec16c1e52b1c34859d4982a0fb03300438f0b"
+SRC_URI[sha256sum] = "23ede7e93c8efee343ad8c6514c28f3708207e5106af3b3e4969b3a9ed7039e7"
 
 S = "${WORKDIR}/msgpack-cxx-${PV}"