….3 (#1015)

Updated
[OpenTelemetry.Exporter.OpenTelemetryProtocol](https://github.com/open-telemetry/opentelemetry-dotnet)
from 1.15.2 to 1.15.3.

<details>
<summary>Release notes</summary>

_Sourced from [OpenTelemetry.Exporter.OpenTelemetryProtocol's
releases](https://github.com/open-telemetry/opentelemetry-dotnet/releases)._

## 1.15.3

For highlights and announcements pertaining to this release see:
[Release Notes >
1.15.3](https://github.com/open-telemetry/opentelemetry-dotnet/blob/main/RELEASENOTES.md#​1153).

The following changes are from the previous release
[1.15.2](https://github.com/open-telemetry/opentelemetry-dotnet/releases/tag/core-1.15.2).

* NuGet: [OpenTelemetry
v1.15.3](https://www.nuget.org/packages/OpenTelemetry/1.15.3)

* Fix resource leak in batch and periodic exporting task workers for
Blazor/WASM.

([#​7069](open-telemetry/opentelemetry-dotnet#7069))
  
  * Fixed `LogRecord.LogLevel` to preserve `LogLevel.None` and handle
unspecified or out-of-range severities without returning invalid enum
values.

([#​7092](open-telemetry/opentelemetry-dotnet#7092))
  
* Fixed `OTEL_TRACES_SAMPLER_ARG` handling to treat out-of-range, `NaN`,
and
infinite values as invalid and fall back to the default ratio when using
    `traceidratio` and `parentbased_traceidratio` samplers.

([#​7103](open-telemetry/opentelemetry-dotnet#7103))

See
[CHANGELOG](https://github.com/open-telemetry/opentelemetry-dotnet/blob/core-1.15.3/src/OpenTelemetry/CHANGELOG.md)
for details.

* NuGet: [OpenTelemetry.Api
v1.15.3](https://www.nuget.org/packages/OpenTelemetry.Api/1.15.3)

* Fix baggage and trace headers not respecting the maximum length in
some cases.

([#​7061](open-telemetry/opentelemetry-dotnet#7061))
  
  * Improve efficiency of parsing of baggage and B3 propagation headers.

([#​7061](open-telemetry/opentelemetry-dotnet#7061))
  
* **Breaking change:** Fixed `tracestate` parsing to reject keys that do
not
begin with a lowercase letter, including keys beginning with digits, to
    align with the W3C Trace Context specification.

([#​7065](open-telemetry/opentelemetry-dotnet#7065))
  
* Fixed `BaggagePropagator` to trim optional whitespace (OWS) around `=`
    separators when parsing the `baggage` header, as required by the
    [W3C Baggage specification](https://www.w3.org/TR/baggage/).

([#​7009](open-telemetry/opentelemetry-dotnet#7009))
  
* Fixed `BaggagePropagator` to strip baggage properties (e.g.
`;metadata`)
    from values when parsing the `baggage` header.

([#​7009](open-telemetry/opentelemetry-dotnet#7009))

See
[CHANGELOG](https://github.com/open-telemetry/opentelemetry-dotnet/blob/core-1.15.3/src/OpenTelemetry.Api/CHANGELOG.md)
for details.

* NuGet: [OpenTelemetry.Api.ProviderBuilderExtensions
v1.15.3](https://www.nuget.org/packages/OpenTelemetry.Api.ProviderBuilderExtensions/1.15.3)

  No notable changes.

See
[CHANGELOG](https://github.com/open-telemetry/opentelemetry-dotnet/blob/core-1.15.3/src/OpenTelemetry.Api.ProviderBuilderExtensions/CHANGELOG.md)
for details.

 ... (truncated)

## 1.15.3-beta.1

The following changes are from the previous release
[1.15.2-beta.1](https://github.com/open-telemetry/opentelemetry-dotnet/releases/tag/coreunstable-1.15.2-beta.1).

* NuGet: [OpenTelemetry.Exporter.Prometheus.AspNetCore
v1.15.3-beta.1](https://www.nuget.org/packages/OpenTelemetry.Exporter.Prometheus.AspNetCore/1.15.3-beta.1)

* Fixed metric unit strings containing invalid Prometheus characters
(e.g. `# RU`)
    not being sanitized, resulting in malformed metric names.

([#​6187](open-telemetry/opentelemetry-dotnet#6187))
  
* Fixed Prometheus metric serialization to handle empty label names
without
    throwing during scrape rendering.

([#​7077](open-telemetry/opentelemetry-dotnet#7077))
  
  * Updated OpenTelemetry core component version(s) to `1.15.3`.

([#​7125](open-telemetry/opentelemetry-dotnet#7125))

See
[CHANGELOG](https://github.com/open-telemetry/opentelemetry-dotnet/blob/coreunstable-1.15.3-beta.1/src/OpenTelemetry.Exporter.Prometheus.AspNetCore/CHANGELOG.md)
for details.

* NuGet: [OpenTelemetry.Exporter.Prometheus.HttpListener
v1.15.3-beta.1](https://www.nuget.org/packages/OpenTelemetry.Exporter.Prometheus.HttpListener/1.15.3-beta.1)

* Fixed metric unit strings containing invalid Prometheus characters
(e.g. `# RU`)
    not being sanitized, resulting in malformed metric names.

([#​6187](open-telemetry/opentelemetry-dotnet#6187))
  
* Fixed Prometheus metric serialization to handle empty label names
without
    throwing during scrape rendering.

([#​7077](open-telemetry/opentelemetry-dotnet#7077))
  
  * Updated OpenTelemetry core component version(s) to `1.15.3`.

([#​7125](open-telemetry/opentelemetry-dotnet#7125))

See
[CHANGELOG](https://github.com/open-telemetry/opentelemetry-dotnet/blob/coreunstable-1.15.3-beta.1/src/OpenTelemetry.Exporter.Prometheus.HttpListener/CHANGELOG.md)
for details.

* NuGet: [OpenTelemetry.Shims.OpenTracing
v1.15.3-beta.1](https://www.nuget.org/packages/OpenTelemetry.Shims.OpenTracing/1.15.3-beta.1)

  * Fixes support for `byte`, `short`, `int`, and `float` attributes.

([#​7080](open-telemetry/opentelemetry-dotnet#7080))
  
  * Updated OpenTelemetry core component version(s) to `1.15.3`.

([#​7125](open-telemetry/opentelemetry-dotnet#7125))

See
[CHANGELOG](https://github.com/open-telemetry/opentelemetry-dotnet/blob/coreunstable-1.15.3-beta.1/src/OpenTelemetry.Shims.OpenTracing/CHANGELOG.md)
for details.



Commits viewable in [compare
view](open-telemetry/opentelemetry-dotnet@core-1.15.2...core-1.15.3).
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