Update Microsoft.CodeAnalysis.CSharp.Workspaces to 4.6.0

[meziantou]

No description provided.

[codecov]

Codecov Report

Merging #529 (76efa88) into main (da94855) will not change coverage.
The diff coverage is 92.85%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #529   +/-   ##
=======================================
  Coverage   89.91%   89.91%           
=======================================
  Files         175      175           
  Lines       12844    12844           
=======================================
  Hits        11549    11549           
  Misses       1295     1295           

Impacted Files	Coverage Δ
...iantou.Analyzer/Internals/CompilationExtensions.cs	81.81% <ø> (ø)
...Meziantou.Analyzer/Rules/NamedParameterAnalyzer.cs	89.32% <ø> (ø)
...antou.Analyzer/Rules/OptimizeStartsWithAnalyzer.cs	91.82% <92.85%> (ø)