build: Force default libdir location for libhandy target on Windows to keep MinGW compatibility

5 jobs for mingw64 in 3 minutes and 52 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #8373
librem5
build-debian-clang

00:02:35

passed #8371
librem5
build-debian-gcc

00:02:56

39.8%
passed #8372
librem5
build-debian-gcc-static

00:02:01

passed #8375
librem5
build-debian-package

00:01:49

passed #8374
librem5
build-fedora-gcc

00:03:30