Remove System.DirectoryServices dependency in test utilities

[Youssef1313]

Fixes #6509

[stephentoub]

I'm curious what DirectoryServices is used for here?

[Youssef1313]

roslyn-analyzers/src/Test.Utilities/AdditionalMetadataReferences.cs

Line 24 in c6352bf

.AddAssemblies(ImmutableArray.Create("PresentationFramework", "System.DirectoryServices", "System.Web", "System.Web.Extensions", "System.Xaml"))

I guess we can get rid of it and use AddPackages instead of AddAssemblies

[codecov]

Codecov Report

Merging #6515 (d674201) into main (c877c9a) will increase coverage by 0.04%.
The diff coverage is 100.00%.

❗ Current head d674201 differs from pull request most recent head 203828f. Consider uploading reports for the commit 203828f to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6515      +/-   ##
==========================================
+ Coverage   96.37%   96.41%   +0.04%     
==========================================
  Files        1390     1371      -19     
  Lines      324027   319164    -4863     
  Branches    10609    10270     -339     
==========================================
- Hits       312269   307724    -4545     
+ Misses       9218     8985     -233     
+ Partials     2540     2455      -85     

[buyaa-n]

I'm curious what DirectoryServices is used for here?

Used in ReviewCodeForLdapInjectionVulnerabilities analyzer test

roslyn-analyzers/src/NetAnalyzers/UnitTests/Microsoft.NetCore.Analyzers/Security/ReviewCodeForLdapInjectionVulnerabilitiesTests.cs

Line 32 in 5bfc7d5

using System.DirectoryServices;

[buyaa-n]

LGTM