Bump google.golang.org/protobuf from 1.29.1 to 1.33.0 in /concepts/observability-strategy/configurable-monitoring/pocs/tools/metric-gen in the go_modules group across 1 directory

Bump google.golang.org/protobuf from 1.29.1 to 1.33.0 in /concepts/observability-strategy/configurable-monitoring/pocs/tools/metric-gen in the go_modules group across 1 directory #50