[opentelemetry-cpp] update version to v1.2.0#22925

Merged

BillyONeal merged 4 commits intomicrosoft:masterfrom juandemanjon:master

Feb 4, 2022

+10-4

Commits on Feb 3, 2022

Commits on Feb 4, 2022

Fix version database.
BillyONeal
committed