Bump dotnet-outdated-tool from 4.8.1 to 4.9.0 - #327

Sourced from dotnet-outdated-tool's releases.

4.9.0

What's Changed

• Adopt MCP 2026-07-28 spec with legacy version negotiation by @​slang25 in Adopt MCP 2026-07-28 spec with legacy version negotiation dotnet-outdated/dotnet-outdated#772
• Fix concurrent cache corruption during recursive file-based app upgrades by @​DamianEdwards in Fix concurrent cache corruption during recursive file-based app upgrades dotnet-outdated/dotnet-outdated#788
• Fix: Parameter --maximum-version ignores exact version references by @​chefarbeiter in Fix: Parameter --maximum-version ignores exact version references dotnet-outdated/dotnet-outdated#671
• Show a friendly message instead of crashing when a solution has no projects by @​DanielC000 in Show a friendly message instead of crashing when a solution has no projects dotnet-outdated/dotnet-outdated#771
• Surface package-upgrade stdout so failures are diagnosable by @​timabell in Surface package-upgrade stdout so failures are diagnosable dotnet-outdated/dotnet-outdated#790
• Fix multiline central package version updates by @​onuracar-dev in Fix multiline central package version updates dotnet-outdated/dotnet-outdated#783
• Support versioned MSBuild project SDKs in project files by @​thomhurst in Support versioned MSBuild project SDKs in project files dotnet-outdated/dotnet-outdated#793
• Preserve whitespace in Directory.Packages.props during upgrades by @​symbiogenesis in Preserve whitespace in Directory.Packages.props during upgrades dotnet-outdated/dotnet-outdated#803
• Treat package references injected by custom SDKs as auto-referenced by @​thomhurst in Treat package references injected by custom SDKs as auto-referenced dotnet-outdated/dotnet-outdated#795
• Preserve version ranges when upgrading packages by @​GREsau in Preserve version ranges when upgrading packages dotnet-outdated/dotnet-outdated#702
• Preserve MSBuild version variables across project and props files by @​symbiogenesis in Preserve MSBuild version variables across project and props files dotnet-outdated/dotnet-outdated#805
• Replace McMaster command-line parsing with System.CommandLine by @​slang25 in Replace McMaster command-line parsing with System.CommandLine dotnet-outdated/dotnet-outdated#808
• Bump version to 4.9.0 by @​slang25 in Bump version to 4.9.0 dotnet-outdated/dotnet-outdated#806

New Contributors

• @​chefarbeiter made their first contribution in Fix: Parameter --maximum-version ignores exact version references dotnet-outdated/dotnet-outdated#671
• @​DanielC000 made their first contribution in Show a friendly message instead of crashing when a solution has no projects dotnet-outdated/dotnet-outdated#771
• @​timabell made their first contribution in Surface package-upgrade stdout so failures are diagnosable dotnet-outdated/dotnet-outdated#790
• @​onuracar-dev made their first contribution in Fix multiline central package version updates dotnet-outdated/dotnet-outdated#783
• @​thomhurst made their first contribution in Support versioned MSBuild project SDKs in project files dotnet-outdated/dotnet-outdated#793
• @​GREsau made their first contribution in Preserve version ranges when upgrading packages dotnet-outdated/dotnet-outdated#702

Full Changelog: dotnet-outdated/dotnet-outdated@v4.8.1...v4.9.0

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