Bump OpenTelemetry.Exporter.OpenTelemetryProtocol from 1.12.0 to 1.15.3#18

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dependabot/nuget/src/aspire/DevContainers.Aspire.ServiceDefaults/OpenTelemetry.Exporter.OpenTelemetryProtocol-1.15.3codebytes/dev-containers:dependabot/nuget/src/aspire/DevContainers.Aspire.ServiceDefaults/OpenTelemetry.Exporter.OpenTelemetryProtocol-1.15.3Copy head branch name to clipboard