yaml-cpp: upgrade 0.8.0 -> 0.9.0

Changelog:
============
- Increase minimum required CMake version to 3.5, update Googletest to 1.13
- Bazel module builds
- node/convert: Enable the template specialization for std::string_view properly when the library is compiled by MSVC on Windows
- CMake: Allow to disable uninstall
- Update cmakelists to use system googletest if available
- Fix indentation of empty flow sequences
- Add option YAML_ENABLE_PIC
- fix: use C locale by default
- Use FetchContent_MakeAvailable
- fix: parse files with '\r' symbols as line ending correctly
- fix(src): avoid possible infinite loop in LoadAll()
- missing keys should throw InvalidNode, not BadConversion
- fix: prettier floating point numbers
- Optimization of merge memories

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-support/yaml-cpp/yaml-cpp_0.9.0.bb

@@ -8,7 +8,7 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=6a8aaf0595c2efc1a9c2e0913e9c1a2c"
 # yaml-cpp releases are stored as archive files in github.
 # download the exact revision of release
 SRC_URI = "git://github.com/jbeder/yaml-cpp.git;branch=master;protocol=https"
-SRCREV = "28f93bdec6387d42332220afa9558060c8016795"
+SRCREV = "56e3bb550c91fd7005566f19c079cb7a503223cf"
 PV .= "+git"