lang/gcc11-devel: Update to 11.3.1.s20221021 and enable D lang compiler

- Update to 11.3.1.s20221021.

- Enable D lang compiler (second attempt): this time the values in
  libphobos/libdruntime/core/sys/freebsd/config.d have been updated to
  include FreeBSD 14 (CURRENT), and while here the values corresponding
  to FreeBSD 12 and 13 have also been updated to the latest supported
  version [1].

PR:             266825 [1]
Co-authored-by: Daniel Engberg <diizzy@FreeBSD.org>