C++ runtime tests fail for C++17 using MSVC v142

[mikir]

Zserio version and language
Zserio: 2.13
Language: C++17, MSVC v142

Describe the bug
If C++17 is used for MSVC v142, the C++ runtime tests fail with the following error:

C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Tools\MSVC\14.29.30133\include\xstring(2356,49): error C2338:
basic_string<T, Traits, Allocator> requires that Allocator's value_type match T
(See N4659 26.2.1 [container.requirements.general]/16 allocator_type)
Either fix the allocator value_type or define _ENFORCE_MATCHING_ALLOCATORS=0 to suppress this diagnostic.
(compiling source file D:\a\zserio\zserio\compiler\extensions\cpp\runtime\test\zserio\AllocatorPropagatingCopyTest.cpp) 
[D:\a\zserio\zserio\build\runtime_libs\cpp\windows64-msvc\release\runtime_test\ZserioCppRuntimeTest.vcxproj]

How to reproduce
Steps to reproduce the behavior:

• Install MSVC v142
• Set envinroment variable CMAKE_EXTRA_ARGS to -DCMAKE_CXX_STANDARD=17
• Run scripts/build.sh cpp_rt-windows64-msvc

Expected behavior
No failure, everything should work as usually.

Additional context
Both debug and release configuration fail. There are many warnings as well:

warning C4996: 'std::allocator<T>::pointer': warning STL4010: Various members of std::allocator are deprecated in C++17.
Use std::allocator_traits instead of accessing these members directly.
You can define _SILENCE_CXX17_OLD_ALLOCATOR_MEMBERS_DEPRECATION_WARNING or
_SILENCE_ALL_CXX17_DEPRECATION_WARNINGS to acknowledge that you have received this warning.

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