Update MSBuild packages to 18.0.2

[Copilot]

Updates MSBuild-related NuGet packages from 17.14.x to 18.0.2.

Changes

• Microsoft.Build.Framework: 17.14.28 → 18.0.2
• Microsoft.Build.Tasks.Core: 17.14.8 → 18.0.2
• Microsoft.Build.Utilities.Core: 17.14.8 → 18.0.2
• Microsoft.Build: 17.14.8 → 18.0.2

All changes made in src/SourceBrowser/src/Directory.Packages.props (central package management).

Compatibility

Version 18.0.2 targets .NET 10.0+ and .NET Framework 4.7.2+, compatible with the repository's existing SDK configuration (global.json specifies .NET 10 with rollForward: major).

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• dnceng.pkgs.visualstudio.com
  • Triggering command: /usr/bin/dotnet dotnet restore src/source-indexer.sln (dns block)
  • Triggering command: /usr/bin/dotnet dotnet restore src/SourceBrowser/SourceBrowser.sln (dns block)
  • Triggering command: /usr/bin/dotnet dotnet build src/SourceBrowser/src/BinLogParser/BinLogParser.csproj --no-restore (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

Update the MSBuild-related NuGet package dependencies in the dotnet/source-indexer repository to version 18.0.2.

Currently, the following packages are pinned to 17.14.x and should be updated:

• Microsoft.Build.Tasks.Core: 17.14.8 → 18.0.2
• Microsoft.Build.Utilities.Core: 17.14.8 → 18.0.2
• Microsoft.Build: 17.14.8 → 18.0.2
• Microsoft.Build.Framework: 17.14.28 → 18.0.2

Requirements:

1. Locate all project files and dependency manifests that reference these packages (e.g., .csproj, Directory.Packages.props, packages.props, or any central package management file) within the dotnet/source-indexer repository.
2. Update every occurrence of the above packages to use version 18.0.2.
3. Ensure there are no remaining 17.14.x references for these Microsoft.Build* packages.
4. Run or document any existing unit tests, build scripts, or validation steps relevant to dependency upgrades, if part of the repo’s standard workflow (e.g., dotnet restore, dotnet build, or repo-specific build scripts) and update documentation if necessary.
5. If the repo includes global.json or other SDK constraints which might conflict with MSBuild 18.0.2 usage, note this in the PR description and, if appropriate per repo conventions, adjust them.

Deliverables:

• Updated project/dependency files with Microsoft.Build*, Microsoft.Build.Tasks.Core, Microsoft.Build.Utilities.Core, and Microsoft.Build.Framework all set to version 18.0.2.
• Any necessary ancillary updates (e.g., lock files if the repo tracks them, or build pipeline config if versions are duplicated there).
• A clear PR description summarizing the version changes and any checks performed.

This pull request was created from Copilot chat.

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