Added liblua5.4-dev to the list of packages installed by apt
Changed NOMINATIM_VERSION from 4.1.0 to 4.1, which is a new version that was released on 2020/07/01
3a) Added linux-libc-dev and build essential as dependencies for nominatim installation (not sure if this is correct though)
3b) Also added liblua*-dev as dependency for nominatim installation (again not sure about this one either).
See https://github.com/osm-search/Nominatim/releases/tag/v4.1.1