Building of less software depends on ncurses

Until now, the 'less' software package (used to view large files easily on
the command-line and used by Git for things like 'git diff' or 'git log')
only depended on 'patchelf' (which is a very low-level software).

However, as Boud reported in bug #59811 [1], building less would crash with
an error saying "Cannot find terminal libraries" in some systems (including
the proposed Docker image of 'README.md' which I confirmed
afterwards). Looking into the 'configure' script of 'less', I noticed that
'less' is actually just checking for some functions provided by the ncurses
library!

With this commit, 'less' depends on 'ncurses'. I was able to confirm that
with this change, 'less' successfully builds within the Docker image.

[1] https://savannah.nongnu.org/bugs/?59811

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