MOSCOW (Reuters) -Weekly consumer prices in Russia rose marginally for the sixth week running, data published on Wednesday showed, vindicating the central bank’s decision to end its rate-cutting cycle last week and hold its key rate at 7.5%. The central bank cautioned that expectations of price rises had grown and that Russia’s partial mobilisation could stoke longer-term inflation due to a shrinking labour force. The central bank had cut its key rate six times in a row after an emergency hike to 20% in February when Russia’s decision to send troops into Ukraine caused inflation to spike. Russ…