Bump protobuf from 3.7.1 to 3.15.0 in /opencvlib#18

dependabot[bot] wants to merge 1 commit intomastergmonkman/python:masterfrom

dependabot/pip/opencvlib/protobuf-3.15.0gmonkman/python:dependabot/pip/opencvlib/protobuf-3.15.0Copy head branch name to clipboard