conky: Update to version 1.9.0.
conky: Update to version 1.9.0.

Version 1.8.1 seems to be quite dated, in addition I'd like to use the weather
plugin, which isn't available in 1.8.1 as well. If you work in your hermetically
sealed environment, you surely want to know what's going on outside.

Signed-off-by: aszlig <ee1aa092358634f9c53f01b5a783726c9e21b35a@redmoonstudios.org>

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