2.12 release: branch voltha-2.12 created from tag v2.12.0

1. 43f5cc0 [VOL-5254] - Baseline build prior to release tag/branch by Joey Armstrong · 8 months ago v2.2.0
2. 82f98dd VOL-5088 v2.12 - update voltha.protos version in all go.mod configs by Mahir Gunyel · 1 year, 2 months ago v2.1.5
3. e05cf0c [VOL-4291] OfAgent changes for gRPC migration by David K. Bainbridge · 3 years, 1 month ago v2.0.0