Update roslyn to 5.3.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
Microsoft.CodeAnalysis.CSharp	5.0.0 → 5.3.0
Microsoft.CodeAnalysis.CSharp.Workspaces	5.0.0 → 5.3.0
Microsoft.CodeAnalysis.Common	5.0.0 → 5.3.0
Microsoft.CodeAnalysis.Features	5.0.0 → 5.3.0
Microsoft.CodeAnalysis.Workspaces.Common	5.0.0 → 5.3.0

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about these updates again.

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Test Results

0 files   -   6  0 suites   - 6   0s ⏱️ - 3m 29s
0 tests  - 216  0 ✅  - 216  0 💤 ±0  0 ❌ ±0 
0 runs   - 356  0 ✅  - 356  0 💤 ±0  0 ❌ ±0 

Results for commit 5edd7cb. ± Comparison against base commit b21f085.

♻️ This comment has been updated with latest results.