fix(csharp): bump WireMock.Net to 2.6.0 in generated test projects

[patrickthornton]

Closes FER-10540

Summary

• Auth0 reported Snyk flagging WireMock.Net 2.2.0 in their generated C# SDK test project (failing job). The version was hardcoded in our shared test-project template, so every C# SDK ships with the same pinned 2.2.0.
• Bumps the template to 2.6.0 (latest stable on NuGet). Test-only dependency, no runtime impact on SDK consumers.

Example

Before — generators/csharp/base/src/asIs/test/Template.Test.csproj:

<PackageReference Include="WireMock.Net" Version="2.2.0" />

After:

<PackageReference Include="WireMock.Net" Version="2.6.0" />

All 174 seed/csharp-sdk/**/<Project>.Test.csproj snapshots were regenerated to reflect the bump — the only content change across them is the version string.

Test plan

• pnpm seed test --generator csharp-sdk --local --skip-scripts — 174/174 fixtures pass
• git diff --unified=0 | grep -E "^[+-][^+-]" confirms every changed line is the WireMock.Net Version bump (350 lines, all matching)
• Downstream check: regenerate Auth0's SDK after release and confirm Snyk no longer flags

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SDK Generation Benchmark Results

Comparing PR branch against median of 5 nightly run(s) on main (latest: 2026-05-13T05:16:22Z).

Full benchmark table (click to expand)

Generator	Spec	main (generator)	main (E2E)	PR (generator)	Delta
csharp-sdk	square	68s (n=5)	101s (n=5)	60s	-8s (-11.8%)

main (generator): generator-only time via --skip-scripts (includes Docker image build, container startup, IR parsing, and code generation — this is the same Docker-based flow customers use via fern generate). main (E2E): full customer-observable time including build/test scripts (nightly baseline, informational). Delta is computed against generator-only baseline.
⚠️ = generation exited with a non-zero exit code (timing may not reflect a successful run).
Baseline from nightly runs on main (latest: 2026-05-13T05:16:22Z). Trigger benchmark-baseline to refresh.
Last updated: 2026-05-13 16:19 UTC