BRUSSELS, Oct 5 (Reuters) – The European Union wants to retain its industrial edge and competitiveness in a world shifting more to digital and green products, but has found itself worryingly dependent on others, particularly China for critical minerals. As geopolitical tensions rise, after Russia's invasion of Ukraine and with a U.S.-China standoff, risk is a key word for the 27-nation bloc's economic policy as it ponders how to guarantee supply chains and how widely to share technology. EU leaders will discuss these topics at their summit on Friday. DE-RISKING The bloc wants to limit its dependency for certain strategic…