Upstream update: dotnet + modern-csharp + project-setup

[github-actions]

Automation detected pending upstream changes for dotnet + modern-csharp + project-setup.

• Issue key: dotnet+modern-csharp+project-setup
• Affected skills: dotnet, modern-csharp, project-setup
• Pending upstream watches: 1

Pending upstream sources:

• dotnet-sdk-release | github_release | dotnet/sdk release
  • Source: https://github.com/dotnet/sdk/releases/tag/v9.0.314
  • Current value: v9.0.314
  • Published at: 2026-05-12T18:41:25Z
  • Detail: v9.0.314 (2026-05-12T18:41:25Z)

Why this matters:

• Review the linked skills when dotnet/sdk ships a new release.

Suggested follow-up:

• Review the upstream release notes or documentation diff
• Update the affected files under skills/
• Update README.md if framework coverage or guidance changed
• Close this issue after the catalog has been refreshed