[v1.9-branch] Revert "[v1.9-branch] RHOAIENG-10827: feat(nbcs): update ose-oauth-proxy image digest reference from 4.8 to the latest 4.14 version (#388)"

[v1.9-branch] Revert "[v1.9-branch] RHOAIENG-10827: feat(nbcs): update ose-oauth-proxy image digest reference from 4.8 to the latest 4.14 version (#388)" #178