build-mingw-w64: Update to the latest master version

- Fixed the dinput/dinput8 libraries for armv7/aarch64
- Provide libcfgmgr32.a for aarch64
- Fix cases of duplicate definitions of snprintf/vsnprintf when using
  msvcrt as crt, when building C++ code
- Fix cases where mftransform.h would undefine EXTERN_C, turning other
  variables declared as EXTERN_C into actual definitions

build-mingw-w64.sh

@@ -18,7 +18,7 @@ set -e
 
 : ${DEFAULT_WIN32_WINNT:=0x601}
 : ${DEFAULT_MSVCRT:=ucrt}
-: ${MINGW_W64_VERSION:=c4617bac7b53234d9adf47a23cdfd907c5ad10fe}
+: ${MINGW_W64_VERSION:=823bc20b3c9aea724acbd60400a923c35757b08c}
 unset HOST
 
 while [ $# -gt 0 ]; do