less: synchronize with MSYS2's version
less: synchronize with MSYS2's version

This replaces our version with the one from 5762fe36d1 (less: update to
590, 2021-07-20), in preparation for building and uploading an i686
version of the package (MSYS2 no longer builds i686 versions of their
MSYS packages).

Signed-off-by: Johannes Schindelin <53fb8db7833fca1e1746dd8592f61048d350f64c@gmx.de>

git-for-windows/MSYS2-packages,git-for-windows/MSYS2-packages,git-for-windows/MSYS2-packages,git-for-windows/MSYS2-packages,dscho/MSYS2-packages,dscho/MSYS2-packages,dscho/MSYS2-packages,dscho/MSYS2-packages