fix(docker): Restore provision of Lua colors library

Not used by CaSILE by default, but used by *many* downstream projects
and was previously provided. Dropping it didn't come with a breaking
message.

hooks/build

@@ -11,7 +11,7 @@ RUNTIME_DEPS='bc bcprov curl decasify entr epubcheck fontconfig ghostscript git
 ' texlive-binextra texlive-xetex texlive-formatsextra texlive-latexextra texlive-langenglish texlive-langother texlive-langcyrillic'\
 ' tex-gyre-fonts ttf-hack yq zint zola zsh'\
 ' lua lua-yaml lua-decasify'\
-' luajit luarocks lua51-cldr lua51-cosmo lua51-decasify lua51-fluent lua51-lpeg lua51-luautf8 lua51-yaml'\
+' luajit luarocks lua51-cldr lua51-colors-git lua51-cosmo lua51-decasify lua51-fluent lua51-lpeg lua51-luautf8 lua51-yaml'\
 ' perl perl-yaml perl-yaml-merge-simple'\
 ' python python-isbnlib python-deepl python-pandocfilters python-pantable python-ruamel-yaml python-usfm2osis-cw-git'\
 ' xcftools xorg-server-xvfb'