Restore asn1/6.0.0

Author: sebastienros

eng/SourceBuildPrebuiltBaseline.xml

@@ -45,6 +45,9 @@
     <!-- Transitive dependency of Roslyn dependencies. -->
     <UsagePattern IdentityGlob="System.Text.Json/8.0.0*" />
     <UsagePattern IdentityGlob="System.Text.Encodings.Web/8.0.0*" />
+
+    <!-- Transitive dependency of System.Security.Cryptography.Pkcs.5.0.*. -->
+    <UsagePattern IdentityGlob="System.Formats.Asn1/6.0.0" />
   </IgnorePatterns>
 
   <!-- Transitive dependencies, suppressed as per https://github.com/dotnet/aspnetcore/pull/57887#issuecomment-2362241518-->