appsec: upgrade go-libddwaf v3.3.0 -> v3.4.0

[eliottness]

What does this PR do?

• Upgrade go-libddwaf
• Setup RASP metrics

Motivation

APPSEC-54194

Reviewer's Checklist

• Changed code has unit tests for its functionality at or near 100% coverage.
• System-Tests covering this feature have been added and enabled with the va.b.c-dev version tag.
• There is a benchmark for any new code, or changes to existing code.
• If this interacts with the agent in a new way, a system test has been added.
• Add an appropriate team label so this PR gets put in the right place for the release notes.
• Non-trivial go.mod changes, e.g. adding new modules, are reviewed by @DataDog/dd-trace-go-guild.

Unsure? Have a question? Request a review!

[pr-commenter]

Benchmarks

Benchmark execution time: 2024-09-18 13:37:10

Comparing candidate commit f7f515d in PR branch eliott.bouhana/APPSEC-54945 with baseline commit 3646321 in branch main.

Found 0 performance improvements and 3 performance regressions! Performance is the same for 56 metrics, 0 unstable metrics.

scenario:BenchmarkSampleWAFContext-24

• 🟥 allocated_mem [+1.127KB; +1.133KB] or [+7.627%; +7.668%]
• 🟥 allocations [+8; +8] or [+4.843%; +5.289%]

scenario:BenchmarkTracerAddSpans-24

• 🟥 execution_time [+84.024ns; +100.976ns] or [+2.169%; +2.607%]