Update modernize-dotnet plugin to 1.0.1161-preview1

[tlmii]

Automated update of the modernize-dotnet external plugin registry entry from UpgradeAssistant build main-20260715.2 (14667856) (version 1.0.1161-preview1).

Updates plugins/external.json and the generated .github/plugin/marketplace.json (regenerated via npm run plugin:generate-marketplace). The plugin source is pinned to the merge commit of dotnet/modernize-dotnet#1723 (ce4ec09678498da38099ca9169c1624c59c2a89a).

  _{Generated via Copilot (Claude Opus 4.8) on behalf of @tlmii}

[github-actions]

🔒 PR Risk Scan Results

Scanned 2 changed file(s).

Severity	Count
🔴 High	0
🟠 Medium	0
ℹ️ Info	0

✅ No matching risk patterns were detected in changed files.

This is an automated soft-gate report. Findings indicate review targets and do not block merge by themselves.

[github-actions]

✅ External plugin PR checks passed

• Changed entries detected: 1
• Workflow state label: ready-for-review

Per-plugin quality summary

Plugin	vally lint	install smoke test	version match	overall	source tree
modernize-dotnet	pass	pass	pass	pass	ce4ec09678498da38099ca9169c1624c59c2a89a

Gate output details

modernize-dotnet - vally lint (pass)

0 skill(s) linted

modernize-dotnet - install smoke test (pass)

Install smoke test succeeded. Verified /tmp/external-plugin-quality-ElHHA2/copilot-home/.copilot/installed-plugins/external-plugin-intake/modernize-dotnet/.github/plugin/plugin.json.

modernize-dotnet - version match (pass)

- ce4ec09678498da38099ca9169c1624c59c2a89a: matched version "1.0.1161-preview1" at "plugins/modernize-dotnet/.github/plugin/plugin.json".

• modernize-dotnet: vally-lint=pass, install-smoke=pass, version-match=pass, overall=pass

[Copilot]

Pull request overview

Updates the external modernize-dotnet marketplace entry to the latest preview release and pins it to the verified upstream merge commit.

Changes:

• Updates version to 1.0.1161-preview1.
• Pins the source to commit ce4ec09678498da38099ca9169c1624c59c2a89a.
• Synchronizes the generated marketplace registry.

Show a summary per file

File	Description
plugins/external.json	Updates and pins the canonical external plugin entry.
.github/plugin/marketplace.json	Mirrors the updated entry in generated marketplace data.

Review details

• Files reviewed: 2/2 changed files
• Comments generated: 0
• Review effort level: Medium