[release] Prepare release Extensions.Enrichment-1.12.0-beta.1#3094

Kielek merged 3 commits intomainopen-telemetry/opentelemetry-dotnet-contrib:mainfrom

release/prepare-Extensions.Enrichment-1.12.0-beta.1-releaseopen-telemetry/opentelemetry-dotnet-contrib:release/prepare-Extensions.Enrichment-1.12.0-beta.1-releaseCopy head branch name to clipboard