Update opentelemetry-dotnet monorepo to 1.16.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
OpenTelemetry.Exporter.OpenTelemetryProtocol (source)	1.15.3 → 1.16.0
OpenTelemetry.Extensions.Hosting (source)	1.15.3 → 1.16.0

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Release Notes

open-telemetry/opentelemetry-dotnet (OpenTelemetry.Exporter.OpenTelemetryProtocol)

v1.16.0

Release details: 1.16.0

• Breaking Change Explicit histogram boundaries no longer allow more than
  10 million values.
• Fix BaggagePropagator to correctly follow Key and Value Encoding rules.
• Add support for the W3C randomness flag.
• Fixed TraceContextPropagator to deduplicate duplicate tracestate keys.
• ObservedTimestamp will now be exported for logs in the console exporter.
• Fixed NullReferenceException when exporting OTLP logs if the scope key is
  null.
• Added opt-in support for gzip compression to the OTLP exporter.
• Fixed OTLP disk retry data being stored incorrectly when using persistent
  storage retry.
• Fixed OtlpLogExporter integration with IHttpClientFactory.
• Do not enable the OTLP integration with IHttpClientFactory when mTLS is
  enabled.
• Handle Retry-After response headers that specify a date instead of a delay.
• observed_time_unix_nano will no longer always be identical to time_unix_nano
  when using the logs bridge API.
• Stop validating View-provided metric stream Name against the instrument name
  syntax.
• Fix incorrect validation of OTEL_BSP_* and OTEL_BLRP_* environment variables.
• Fix observable instrument callbacks running once per reader instead of once per
  collection cycle.
• Added exception safety for user-supplied ExemplarReservoir implementations.
• Fixed a circular reference which could cause a LoggerProvider to fail to
  resolve when one of its dependencies depends on ILogger or ILoggerFactory.

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