[PATCH] Fix testsuite with gcc-13

cd /<<PKGBUILDDIR>>/build-static/test && /usr/bin/c++ -DYAML_CPP_STATIC_DEFINE -I/<<PKGBUILDDIR>>/test/integration -I/<<PKGBUILDDIR>>/test -I/<<PKGBUILDDIR>>/src -I/<<PKGBUILDDIR>>/include -isystem /usr/src/googletest/googlemock/include -isystem /usr/src/googletest/googlemock -isystem /usr/src/googletest/googletest/include -isystem /usr/src/googletest/googletest -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -flto=auto -ffat-lto-objects -fstack-protector-strong -Wformat -Werror=format-security -fdebug-prefix-map=/<<PKGBUILDDIR>>=/usr/src/yaml-cpp-0.8.0+dfsg-1~build1 -Wdate-time -D_FORTIFY_SOURCE=2 -std=gnu++14 -Wno-variadic-macros -Wno-sign-compare -DGTEST_HAS_PTHREAD=1 -MD -MT test/CMakeFiles/yaml-cpp-tests.dir/binary_test.cpp.o -MF CMakeFiles/yaml-cpp-tests.dir/binary_test.cpp.o.d -o CMakeFiles/yaml-cpp-tests.dir/binary_test.cpp.o -c /<<PKGBUILDDIR>>/test/binary_test.cpp
/<<PKGBUILDDIR>>/test/binary_test.cpp: In member function ‘virtual void BinaryTest_DecodingNoCrashOnNegative_Test::TestBody()’:
/<<PKGBUILDDIR>>/test/binary_test.cpp:11:38: error: narrowing conversion of ‘-58’ from ‘int’ to ‘char’ [-Wnarrowing]
   11 |   std::string input{-58, -1, -99, 109};
      |                                      ^

Gbp-Pq: Name 1216.patch

[PATCH] Update cmakelists to use system googletest if available.

There is no need to use the embedded gtest code copy in Linux systems, if they already provide the googletest framework system-wide.
Search for it, and fallback to the embedded one if the system one is not detected.

This patch has been also contributed by Simon Quigley <tsimonq2@debian.org>

Gbp-Pq: Name 1035.patch

yaml-cpp (0.8.0+dfsg-6) unstable; urgency=medium

  * Fix hurd build

[dgit import unpatched yaml-cpp 0.8.0+dfsg-6]

Import yaml-cpp_0.8.0+dfsg-6.debian.tar.xz

[dgit import tarball yaml-cpp 0.8.0+dfsg-6 yaml-cpp_0.8.0+dfsg-6.debian.tar.xz]

Import yaml-cpp_0.8.0+dfsg.orig.tar.xz

[dgit import orig yaml-cpp_0.8.0+dfsg.orig.tar.xz]