chore(deps): update roslyn (microsoft.codeanalysis) to 4.14.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
Microsoft.CodeAnalysis.CSharp	4.8.0 → 4.14.0
Microsoft.CodeAnalysis.CSharp.Workspaces	4.8.0 → 4.14.0

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[glennawatson]

Closing in favour of #59, which locks the Roslyn baseline in renovate config rather than raising it.

The 4.8.0 pin is deliberate and load-bearing: the generator and analyzer ship in the version-less analyzers/dotnet/cs folder, and a compiler will not load one built against a newer Roslyn than itself. Moving to 4.14.0 would raise the floor to VS 2022 17.14 / .NET 9.0.3xx and silently drop consumers on the .NET 8 SDK. The reasoning is recorded in both project files.

After #59 merges, these two packages will no longer produce update PRs. Raising the baseline becomes a deliberate edit rather than a dependency bump.

[renovate]

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