chore: Bump libdatadog for FFE remote config support

[leoromanovsky]

Motivation

This is PR 1/2 for adding Feature Flagging and Experimentation (FFE) support to dd-trace-php.

Bumps the libdatadog submodule to include DataDog/libdatadog#1532 which adds:

• RemoteConfigProduct::FfeFlags
• RemoteConfigCapabilities::FfeFlagConfigurationRules
• RemoteConfigData::FfeFlags variant

Changes

• Update libdatadog submodule → ed316b638
• Regenerate Cargo.lock (pin home, rmp, rmp-serde for CI compatibility)

Plan

PR	Description	Status
This PR	libdatadog bump (FFE RC plumbing)	draft
PR 2	FFE evaluation engine + PHP provider + tests	stacked on this

Reference implementation: #3630

[datadog-official]

⚠️ Tests

✨ Fix all issues with Cursor

⚠️ Warnings

🧪 27 Tests failed

    testSearchPhpBinaries from integration.DDTrace\Tests\Integration\PHPInstallerTest (Fix with Cursor)

testSimplePushAndProcess from laravel-58-test.DDTrace\Tests\Integrations\Laravel\V5_8\QueueTest (Datadog) (Fix with Cursor)

DDTrace\Tests\Integrations\Laravel\V5_8\QueueTest::testSimplePushAndProcess
Test code or tested code printed unexpected output: spanLinksTraceId: 698d23f3000000006c95af13c57a725b
tid: 698d23f300000000
hexProcessTraceId: 6c95af13c57a725b
hexProcessSpanId: ec977b2621f3d8ee
processTraceId: 7824352427078480475
processSpanId: 17048230318142904558

phpvfscomposer://tests/vendor/phpunit/phpunit/phpunit:106

testSimplePushAndProcess from laravel-8x-test.DDTrace\Tests\Integrations\Laravel\V8_x\QueueTest (Datadog) (Fix with Cursor)

DDTrace\Tests\Integrations\Laravel\V8_x\QueueTest::testSimplePushAndProcess
Test code or tested code printed unexpected output: spanLinksTraceId: 698d23e900000000000a61996dc5cbd9
tid: 698d23e900000000
hexProcessTraceId: 000a61996dc5cbd9
hexProcessSpanId: 37290548dc4674e0
processTraceId: 2922061366676441
processSpanId: 3974713956622562528

View all

ℹ️ Info

❄️ No new flaky tests detected

_{This comment will be updated automatically if new data arrives.
🔗 Commit SHA: f3d286f | Docs | Datadog PR Page | Was this helpful? Give us feedback!}

[leoromanovsky]

Superseded — going with single PR #3630 instead of stacked approach.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.20%. Comparing base (b9986f9) to head (f3d286f).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3642      +/-   ##
==========================================
- Coverage   62.21%   62.20%   -0.02%     
==========================================
  Files         141      141              
  Lines       13387    13387              
  Branches     1753     1753              
==========================================
- Hits         8329     8327       -2     
- Misses       4260     4263       +3     
+ Partials      798      797       -1     

see 1 file with indirect coverage changes

---

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