Revert "Reapply "Use exact Protobuf version as dependency"""
Revert "Reapply "Use exact Protobuf version as dependency"""

vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa,vespa-engine/vespa