chore: update libdatadog revision to 27aa92cfeeca073d8730a8b4974bd3fdef7ddf3a

[duncanpharvey]

What does this PR do?

Update libdatadog revision to 27aa92cfeeca073d8730a8b4974bd3fdef7ddf3a.

Motivation

We want to support agent computed stats in the Serverless Compatibility Layer. Currently when the Datadog-Client-Computed-Stats header is sent it always disables agent computed stats, even when the value of the header is an empty string.

DataDog/libdatadog#1900

https://datadoghq.atlassian.net/browse/SVLS-8789

Additional Notes

Bumped rustls-webpki to 0.103.13 to fix failing cargo audit check.

Describe how to test/QA your changes

Added a debug log in a test build:

Before change with DD_TRACE_STATS_COMPUTATION_ENABLED=false

DEBUG datadog_trace_agent::trace_processor: Resolved tracer header tags: TracerHeaderTags { lang: "java", lang_version: "21.0.6", lang_interpreter: "OpenJDK 64-Bit Server VM", lang_vendor: "Microsoft", tracer_version: "1.61.1~e32291a78b", container_id: "", client_computed_top_level: true, client_computed_stats: true, dropped_p0_traces: 0, dropped_p0_spans: 0 }

After change with DD_TRACE_STATS_COMPUTATION_ENABLED=false

DEBUG datadog_trace_agent::trace_processor: Resolved tracer header tags: TracerHeaderTags { lang: "java", lang_version: "21.0.6", lang_interpreter: "OpenJDK 64-Bit Server VM", lang_vendor: "Microsoft", tracer_version: "1.61.1~e32291a78b", container_id: "", client_computed_top_level: true, client_computed_stats: false, dropped_p0_traces: 0, dropped_p0_spans: 0 }

[Copilot]

Pull request overview

Updates the libdatadog git revision to pick up the upstream fix for handling an empty Datadog-Client-Computed-Stats header (so agent-computed stats are not incorrectly disabled), and refreshes the lockfile accordingly.

Changes:

• Bump all libdatadog git dependencies to 27aa92cfeeca073d8730a8b4974bd3fdef7ddf3a.
• Switch DefaultHttpClient import in the trace agent stats flusher to libdd-capabilities-impl.
• Update rustls-webpki to 0.103.13 in Cargo.lock (audit fix).

Reviewed changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
crates/datadog-trace-agent/src/stats_flusher.rs	Updates the DefaultHttpClient import to the new libdatadog location.
crates/datadog-trace-agent/Cargo.toml	Bumps libdatadog revisions and adds libdd-capabilities-impl dependency.
crates/datadog-serverless-compat/Cargo.toml	Bumps libdd-trace-utils libdatadog revision.
crates/datadog-agent-config/Cargo.toml	Bumps libdd-trace-obfuscation and libdd-trace-utils libdatadog revisions.
Cargo.lock	Locks new libdatadog revisions, adds libdd-capabilities-impl entry, and bumps rustls-webpki.