[devlead]

This PR contains the following updates:

Package	Type	Update	Change
OpenTelemetry.Extensions.Hosting (source)	nuget	minor	1.19.1 → 1.20.0

---

Release Notes

open-telemetry/opentelemetry-dotnet (OpenTelemetry.Extensions.Hosting)

v1.20.0

Release details: 1.20.0

• Breaking change byte[] attributes longer than the configured attribute value
  length limit (for example OTEL_ATTRIBUTE_VALUE_LENGTH_LIMIT) are now truncated
  to that many bytes instead of being exported in full.
• Breaking change OTEL_EVENT_ATTRIBUTE_COUNT_LIMIT and OTEL_LINK_ATTRIBUTE_COUNT_LIMIT
  now fall back to OTEL_ATTRIBUTE_COUNT_LIMIT (then the default of 128) when
  not set, instead of falling back to OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT.
• Breaking change Instrumentation scope attributes exported from ActivitySource.Tags
  are now limited by OTEL_ATTRIBUTE_COUNT_LIMIT instead of
  OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT. Only applications that set
  OTEL_SPAN_ATTRIBUTE_COUNT_LIMIT to a different value from OTEL_ATTRIBUTE_COUNT_LIMIT
  are affected.
• Breaking change (pre-release only versions): LoggerProvider's protected
  TryCreateLogger(string? name, out Logger? logger) extensibility method has
  been replaced by TryCreateLogger(LoggerOptions options, out Logger? logger).
• Added OpenTelemetryLoggerOptions.Version and
  OpenTelemetryLoggerOptions.SchemaUrl options to set an instrumentation
  library version and schema URL applied to logs emitted via the
  Microsoft.Extensions.Logging ILogger integration.
• Added Logger.SchemaUrl and a LoggerProvider.GetLogger overload accepting
  a schema URL parameter using the new LoggerOptions type.
• ConsoleLogRecordExporter now writes an Instrumentation scope (Logger) section
  (Name, Version, and Schema URL) for each exported LogRecord.
• The OTLP log exporter now exports schema_url on ScopeLogs. Log records
  emitted from a Logger with a schema URL set now populate ScopeLogs.schema_url
  in exported OTLP requests.
• Custom TLS certificate options (custom CA trust and mTLS) and the experimental
  disk retry feature are explicitly marked as not supported on browser-based
  platforms (e.g. Blazor).
• Suppressed informational HTTP client logs from OTLP exporters by default.
• Added improved self-diagnostics logging to improve the support experience.
• Self-diagnostic features are explicitly disabled on browser-based platforms
  (e.g. Blazor) and are now non-functional.
• Added TracerProviderBuilder.ConfigureSampler intended for library authors
  who need to influence sampling without overriding a sampler the application
  has configured.
• Fixed SuppressInstrumentationScope reference counts leaking between
  inherited asynchronous execution contexts.
• Fixed ResourceBuilder.CreateDefault ignoring OTEL_RESOURCE_ATTRIBUTES and
  OTEL_SERVICE_NAME environment variables when the host IConfiguration does
  not contain those settings.
• Fixed a race that could incorrectly route a concurrent metric measurement to
  the overflow point when its tag set was published as the cardinality limit was
  reached.
• Fixed LogRecord.CategoryName resetting the current Logger's Version to
  null when set to a new value.
• Bounded the internal cache of Logger scopes keyed by instrumentation to
  avoid unbounded growth.
• Fixed the MeterProvider and its IServiceProvider being kept alive after the
  host is disposed when using Microsoft.Extensions.Diagnostics versions prior
  to .NET 9.0.
• Fixed a race condition between recording a measurement and collecting a
  histogram with delta temporality that could cause an empty data point to be exported.
• Improved metric collection performance after metric streams are removed by
  compacting metric storage during collection.
• Optimize performance of BaggagePropagator.Inject on .NET Framework using
  lookup tables.
• Avoid closure allocations when serializing cached metric metadata.
• Avoid logging malformed HTTP request headers in the exporter's diagnostic log.
• Avoid buffering the whole compressed request body in memory before sending it
  on .NET Framework when using HTTP/protobuf with gzip compression.
• Fixed log records being dropped when using OtlpExportProtocol.HttpProtobuf
  with IHttpClientFactory integration if the first export of logs happens while
  the IServiceProvider is being disposed. The exporter now falls back to the
  default HttpClient instead of failing the export.
• Dozens of other minor performance improvements.

---

Configuration

📅 Schedule: (UTC)

• Branch creation
  • At any time (no schedule defined)
• Automerge
  • At any time (no schedule defined)

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate CLI.