test: add SDK benchmarks on v0.38.0

[giortzisg]

Description

Test branch

[github-actions]

Semver Impact of This PR

⚪ None (no version bump detected)

📋 Changelog Preview

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Breaking Changes 🛠

• Add support for go 1.26 by giortzisg in #1193
  • bump minimum supported go version to 1.24

New Features ✨

• Log specific message for RequestEntityTooLarge by giortzisg in #1185

Bug Fixes 🐛

• Ensure correct signal delivery on multi-client setups by giortzisg in #1190

Internal Changes 🔧

Deps

• Bump golang.org/x/crypto to 0.48.0 by giortzisg in #1196
• Use go1.24.0 by giortzisg in #1195
• Bump github.com/gofiber/fiber/v2 from 2.52.9 to 2.52.11 in /fiber by dependabot in #1191
• Bump getsentry/craft from 2.19.0 to 2.20.1 by dependabot in #1187

Other

• Add omitzero and remove custom serialization by giortzisg in #1197
• Rename Telemetry Processor components by giortzisg in #1186

Other

• test: add SDK benchmarks on v0.38.0 by giortzisg in #1202

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[github-actions]

SDK Benchmark Results

App	SDK Version	Status	p95 Overhead	p99 Overhead
go/echo	0.42.0	❔ Inconclusive (not converged)	+5.59%	+5.36%
go/gin	0.42.0	❔ Inconclusive (not converged)	+4.86%	+7.59%
go/net-http	0.42.0	❔ Inconclusive (not converged)	+5.37%	+5.56%

go/echo — Inconclusive (not converged)

Current branch: 0.42.0 | Latest release: 0.42.0

Metric	Latest Release	Current Branch	Diff	p-value
p95	+3.76% [+3.16%, +4.35%]	+5.59% [+1.84%, +9.34%]	+1.83pp	0.0235
p99	+3.06% [+1.06%, +5.06%]	+5.36% [+0.43%, +10.28%]	+2.30pp	0.0428

Details

• Iterations used: 3
• Converged: no
• RPS: N/A
• Duration: N/A

go/gin — Inconclusive (not converged)

Current branch: 0.42.0 | Latest release: 0.42.0

Metric	Latest Release	Current Branch	Diff	p-value
p95	+6.67% [-7.83%, +21.17%]	+4.86% [-11.19%, +20.92%]	-1.81pp	0.3224
p99	+8.89% [-10.88%, +28.66%]	+7.59% [-10.66%, +25.84%]	-1.30pp	0.2155

Details

• Iterations used: 3
• Converged: no
• RPS: N/A
• Duration: N/A

go/net-http — Inconclusive (not converged)

Current branch: 0.42.0 | Latest release: 0.42.0

Metric	Latest Release	Current Branch	Diff	p-value
p95	+7.00% [-6.04%, +20.04%]	+5.37% [+0.93%, +9.81%]	-1.63pp	0.0349
p99	+8.62% [-7.95%, +25.20%]	+5.56% [-2.56%, +13.69%]	-3.06pp	0.0985

Details

• Iterations used: 3
• Converged: no
• RPS: N/A
• Duration: N/A