Fixes: #11756
Context: Debian Bookworm only have GCC that links to MSVCRT C library.
Actually, crossroads is failing on our CI probably due to GCC-MSVCRT.
On Debian, there is GCC-UCRT too but it is marked as Experimental and
crossroad does not support it nor Clang-UCRT yet: GNOME/gimp!1860.
Some people reported crossroad working with GCC-MSVCRT in Fedora but
adding a brand new pipeline would be at least suboptimal to mantain.
So, we are temporarely moving from crossroad to quasi-msys2 project which
have UCRT support for both GCC and Clang (it takes compiler resources from
MSYS2). The compilers itself we will take from Debian Testing for parity
(they are standard GCC and Clang with proper CFLAGS set by quasi-msys2).
We may go back to Crossroad when it has UCRT support like quasi-msys2.
d4a7175a0f