Bump protobuf from 3.5.2.post1 to 3.15.0 in /contrib/deterministic-build#11

dependabot[bot] wants to merge 1 commit intomasterBTHPOS/electrum:masterfrom

dependabot/pip/contrib/deterministic-build/protobuf-3.15.0BTHPOS/electrum:dependabot/pip/contrib/deterministic-build/protobuf-3.15.0Copy head branch name to clipboard