Bump protobuf from 5.29.3 to 5.29.6 in /python/serving#18

dependabot[bot] wants to merge 1 commit intomasterGoogle-Health/hear:masterfrom

dependabot/pip/python/serving/protobuf-5.29.6Google-Health/hear:dependabot/pip/python/serving/protobuf-5.29.6Copy head branch name to clipboard