Use UCRT-based mingw-w64 GCC toolchain on Windows

[eramongodb]

Although it is not entirely clear why (e.g. a recent toolchain upgrade?), the mingw-w64 GCC compilation task on windows-vsCurrent is timing out during the linking step. As far as I can tell, this seems to be due to a poor interaction between the lld linker and mingw-w64 GCC (?). Disabling use of the lld linker by setting -DMONGO_USE_LDD=OFF appears to resolve this issue. (Note: libmongocrypt is not compiled for mingw tasks.)

As a drive-by improvement (this doesn't seem to affect the lld problem), a UCRT-based mingw-w64 GCC toolchain (winlibs) has now been deployed to windows-vsCurrent and windows-2022-latest following DEVPROD-20813. This will allows us to finally deprecate and remove the ancient __USE_MINGW_ANSI_STDIO workaround, among other C99 compatibility issues with msvcrt-based toolchains:

printf("%zu\n", (size_t){123}); // UCRT: OK (as it should be).
                               // MSVCRT: error: unknown conversion type character 'z' in format [-Werror=format=]

... well, some C99 compatibility issues. 🥴

char buffer[sizeof("1900-01-01")] = {0};
strftime(buffer, sizeof(buffer), "%F", (struct tm){0}); // error

error: unknown conversion type character 'F' in format [-Werror=format=]
      | strftime(buffer, sizeof(buffer), "%F", &(struct tm){0}); // error
      |                                    ^