Update dependency Microsoft.CodeAnalysis.CSharp to v5

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
Microsoft.CodeAnalysis.CSharp	4.14.0 → 5.6.0

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[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
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Test Results

0 tests  ±0   0 ✅ ±0   0s ⏱️ ±0s
0 suites ±0   0 💤 ±0 
0 files   ±0   0 ❌ ±0 

Results for commit 3987c89. ± Comparison against base commit 08c08b9.

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[codacy-production]

Pull Request Overview

The update to Roslyn 5.3.0 satisfies the requirement to bump the package version. However, there is a significant architectural misalignment as the update occurs within the 'roslyn4.6' project. This inconsistency between the project naming convention and its implementation violates the expected structure for multi-targeting Roslyn versions and may lead to consumer confusion. No security flaws or major logic bugs were identified, but the naming conflict should be resolved prior to merging to maintain structural integrity.

About this PR

• There is a naming misalignment between the project directory/assembly name and the updated dependency version. Updating the package to 5.3.0 within a project explicitly labeled 'roslyn4.6' creates a structural contradiction that impacts the clarity of the solution's versioning strategy.

Test suggestions

• Verify that the project compiles and functions correctly with Roslyn 5.3.0

Prompt proposal for missing tests

Consider implementing these tests if applicable:
1. Verify that the project compiles and functions correctly with Roslyn 5.3.0

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_{🟡 MEDIUM RISK}

The project naming 'Rocket.Surgery.MyAssembly.roslyn4.6' is inconsistent with the update to 'Microsoft.CodeAnalysis.CSharp' version 5.3.0. This conflict between the project's identity and its implementation can confuse consumers and likely violates the architectural pattern for version-specific implementations in this solution. Consider whether a new project should be established for 5.x or if the current project should be renamed.