TOKYO, May 20 (Reuters) - Leaders of the Group of Seven (G7) nations on Saturday called for the development and adoption of technical standards to keep artificial intelligence (AI) "trustworthy", saying governance of the technology has not kept pace with its growth. While the G7 leaders, meeting in Hiroshima, Japan, recognised that the approaches to achieving "the common vision and goal of trustworthy AI may vary", they said in a statement the rules for digital technologies like AI should be "in line with our shared democratic values". The agreement came after the European Union, which participates in the G7, inched...