build: Bump OpenTelemetry and OpenTelemetry.Exporter.OpenTelemetryProtocol#696

NelsonBN merged 2 commits intomainNelsonBN/observability-journey:mainfrom

dependabot/nuget/src/Demo.Shared/Demo.BuildingBlocks.Observability/main/multi-72ee79f695NelsonBN/observability-journey:dependabot/nuget/src/Demo.Shared/Demo.BuildingBlocks.Observability/main/multi-72ee79f695Copy head branch name to clipboard