Bump OpenTelemetry.Api from 1.4.0 to 1.15.3#18

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dependabot/nuget/exercises/testing-code/solution/Workflow/OpenTelemetry.Api-1.15.3temporalio/edu-102-dotnet-code:dependabot/nuget/exercises/testing-code/solution/Workflow/OpenTelemetry.Api-1.15.3Copy head branch name to clipboard