Update MSBuild and Roslyn dependencies for non-servicing builds

[Copilot]

Bumps the pinned MSBuild and Roslyn package versions used when ShouldUseLiveRoslyn is false (i.e., all non-servicing builds).

Version changes

Package	Before	After
Microsoft.Build.Framework	18.0.2	18.3.3
Microsoft.Build.Utilities.Core	18.0.2	18.3.3
Microsoft.Build.Tasks.Core	18.0.2	18.3.3
Microsoft.CodeAnalysis.CSharp	5.0.0	5.3.0-2.final
Microsoft.CodeAnalysis.CSharp.Workspaces	5.0.0	5.3.0-2.final
Microsoft.CodeAnalysis.Workspaces.MSBuild	5.0.0	5.3.0-2.final

The servicing (ShouldUseLiveRoslyn = true) versions (MSBuild 18.5.0 / Roslyn 5.5.0) are unchanged.

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[Copilot]

Pull request overview

Updates the pinned MSBuild and Roslyn package versions used for non-servicing builds (when ShouldUseLiveRoslyn is false) in the EF Core build/versioning infrastructure.

Changes:

• Bump MSBuild package versions from 18.0.2 to 18.3.3 for non-live Roslyn builds.
• Bump Roslyn package versions from 5.0.0 to 5.3.0-2.final for non-live Roslyn builds.

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[roji]

LGTM, but a reminder to be extra careful with these packages as they restrict compiler/VS versions that can be used (we've had issues around this before).

[AndriySvyryd]

LGTM, but a reminder to be extra careful with these packages as they restrict compiler/VS versions that can be used (we've had issues around this before).

This shouldn't be an issue since we are only targeting net11, which will only be supported by the latest VS version at the time of release