chore(deps): bump github.com/DataDog/dd-trace-go/v2 from 2.0.0 to 2.8.1

[dependabot]

Bumps github.com/DataDog/dd-trace-go/v2 from 2.0.0 to 2.8.1.

Release notes

Sourced from github.com/DataDog/dd-trace-go/v2's releases.

v2.8.1

Application Performance Monitoring (APM)

• Revert "fix(ddtrace/tracer): cache trace ID hex encoding (#4481)" by @​darccio
• fix(tracer): enforce baggage item and byte limits on extraction by @​mtoffl01 in #4720
• fix(tracer): drop dd= list-entries over 256 bytes from incoming tracestate by @​mtoffl01 in #4721

Full Changelog: DataDog/dd-trace-go@v2.8.0...v2.8.1

v2.8.0

Summary

New integrations. Two new integrations land in this release: Azure API Management (APIM) callout processor for security (#4620), and twmb/franz-go for Kafka (#4250).

Data Streams Monitoring. All three major Kafka integrations — confluent-kafka-go (#4470), segmentio/kafka-go (#4477), and Sarama (#4560) — now attach kafka_cluster_id for cluster-level visibility. TrackDataStreamsTransaction also gains span tagging and custom timestamp support (#4499).

OpenTelemetry (OTel) and OTLP. The tracer can now export traces directly via the OpenTelemetry Protocol (OTLP), bypassing the Datadog Agent entirely (#4600, #4583). OTel process context v2 (OTLP proto format) is supported (#4478), and the parentbased_always_on sampler works in OTLP mode (#4567).

Large Language Model (LLM) Observability. Prompt tracking is now available for LLMObs spans (#4608). Experiment scope propagates from APM baggage into spans automatically (#4651).

Profiler. An experimental goroutine leak profile is available as opt-in (#4420). The goroutine wait profile type has been removed — this is a breaking change for anyone using it explicitly (#4589).

HTTP and tracing. A new environment variable DD_TRACE_HTTP_URL_QUERY_STRING_ALLOWLIST lets you whitelist query string parameters to keep unredacted (#4562). A new tracer.StartSpanFromPropagatedContext API simplifies span creation from propagated contexts (#4492). AWS EventBridge max payload size is bumped to 1 MB (#4458). Envoy Service Extensions integration gains Unix Domain Socket (UDS) support (#4463).

OpenFeature. Flag evaluation metrics now emit via OTel Metrics (#4489), with allocation key tagging (#4515) and Remote Configuration (RC) integration via FFE_FLAGS subscription at tracer startup (#4495).

Bug fixes. gorm now respects DD_TRACE_REMOVE_INTEGRATION_SERVICE_NAMES_ENABLED (#4618). Redis and Valkey pipeline commands are joined with newlines, fixing agent obfuscation (#4593). A race condition in HTTP client trace timings is resolved (#4591). AppSec block responses now include a correct Content-Length header (#4496), and spurious Remote Configuration errors are silenced when RC is disabled (#4612). ContextWithSpan no longer panics on nil context (#4313). The OTel bridge preserves keep/drop sampling decisions for unsampled spans (#4631). User-provided DogStatsD addresses now correctly take priority over defaults (#4575).

Performance. Trace ID hex encoding is cached (#4481), the span metadata map is preallocated (#4541), and locking is removed from both sampling priority access (#4546) and the internal logger (#4547) — reducing allocations and contention on hot paths.

CI Visibility. Bazel offline cache and payload-file modes are supported (#4503). Known test pagination is implemented for large test suites (#4509).

What's Changed

Application Performance Monitoring (APM)

• feat: collect service override source by @​raphaelgavache in DataDog/dd-trace-go#4500
• feat: support service source for 19 integrations by @​raphaelgavache in DataDog/dd-trace-go#4526
• feat: support service source for 13integrations by @​raphaelgavache in DataDog/dd-trace-go#4534
• feat: add service source on 10 integrations by @​raphaelgavache in DataDog/dd-trace-go#4540
• feat: force usage of ServiceWithSource in contrib by @​raphaelgavache in DataDog/dd-trace-go#4549
• fix(eventbridge): update max payload size to 1m by @​Dogbu-cyber in DataDog/dd-trace-go#4458
• feat(telemetry): add stable session identifier headers by @​khanayan123 in DataDog/dd-trace-go#4574
• feat: collect service source in client stats by @​raphaelgavache in DataDog/dd-trace-go#4519
• feat: OTel process context v2 (otlp proto) by @​nsavoire in DataDog/dd-trace-go#4478
• fix: join redis and valkey pipeline commands with newlines for correct agent obfuscation by @​rarguelloF in DataDog/dd-trace-go#4593

... (truncated)

Commits

• 2b2b2c2 chore: make fix-modules && make generate
• 21438ed internal/version: v2.8.1
• 0bc11f3 internal/orchestrion/_integration: v2.8.1-rc.2
• f17a712 orchestrion/all: v2.8.1-rc.2
• 1b8d8e5 internal/traceprof/traceproftest: v2.8.1-rc.2
• 7b30b1f contrib/aws/datadog-lambda-go/test/integration_tests/error: v2.8.1-rc.2
• 96cc2a4 contrib/aws/datadog-lambda-go/test/integration_tests/hello: v2.8.1-rc.2
• f3013b5 instrumentation/internal/validationtest: v2.8.1-rc.2
• c9f9843 contrib/labstack/echo.v4: v2.8.1-rc.2
• e07b30b contrib/valyala/fasthttp: v2.8.1-rc.2
• Additional commits viewable in compare view

[rowansmithau]

@dependabot rebase