Update opentelemetry-java monorepo to v1.38.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
io.opentelemetry:opentelemetry-bom	1.37.0-alpha -> 1.38.0
io.opentelemetry:opentelemetry-sdk-testing	1.37.0 -> 1.38.0
io.opentelemetry:opentelemetry-exporter-logging	1.37.0 -> 1.38.0
io.opentelemetry:opentelemetry-exporter-otlp	1.37.0 -> 1.38.0
io.opentelemetry:opentelemetry-exporter-zipkin	1.37.0 -> 1.38.0
io.opentelemetry:opentelemetry-api	1.37.0 -> 1.38.0
io.opentelemetry:opentelemetry-sdk	1.37.0 -> 1.38.0

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Release Notes

open-telemetry/opentelemetry-java (io.opentelemetry:opentelemetry-bom)

v1.38.0

API

• Stabilize synchronous gauge
  (#​6419)

Incubator

• Add put(AttributeKey, T) overload to EventBuilder
  (#​6331)

Baggage

• Baggage filters space-only keys
  (#​6431)

SDK

• Add experimental scope config to enable / disable scopes (i.e. meter, logger, tracer)
  (#​6375)

Traces

• Add ReadableSpan#getAttributes
  (#​6382)
• Use standard ArrayList size rather than max number of links for initial span links allocation
  (#​6252)

Metrics

• Use low precision Clock#now when computing timestamp for exemplars
  (#​6417)
• Update invalid instrument name log message now that forward slash / is valid
  (#​6343)

Exporters

• Introduce low allocation OTLP marshalers. If using autoconfigure, opt in
  via OTEL_JAVA_EXPERIMENTAL_EXPORTER_MEMORY_MODE=REUSABLE_DATA.
  • Low allocation OTLP logs marshaler
    (#​6429)
  • Low allocation OTLP metrics marshaler
    (#​6422)
  • Low allocation OTLP trace marshaler
    (#​6410)
  • Add memory mode support to OTLP exporters
    (#​6430)
  • Marshal span status description without allocation
    (#​6423)
  • Add private constructors for stateless marshalers
    (#​6434)
• Mark opentelemetry-exporter-sender-jdk stable
  (#​6357)
• PrometheusHttpServer prevent concurrent reads when reusable memory mode
  (#​6371)
• Ignore TLS components (SSLContext, TrustManager, KeyManager) if plain HTTP protocol is used for
  exporting
  (#​6329)
• Add is_remote_parent span flags to OTLP exported Spans and SpanLinks
  (#​6388)
• Add missing fields to OTLP metric exporters toString()
  (#​6402)

Extensions

• Rename otel.config.file to otel.experimental.config.file for autoconfigure
  (#​6396)

OpenCensus Shim

• Fix opencensus shim spanBuilderWithRemoteParent behavior
  (#​6415)

Tooling

• Add additional API incubator docs
  (#​6356)
• Run build on java 21
  (#​6370)
• Fix running tests with java 8 on macos
  (#​6411)
• Move away from deprecated gradle enterprise APIs
  (#​6363)

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