Merge pull request #605 from mganss/dependabot/nuget/src/HtmlSanitizer/System.Collections.Immutable-10.0.9

Bump System.Collections.Immutable from 10.0.8 to 10.0.9

Author: mganss

src/HtmlSanitizer/HtmlSanitizer.csproj

@@ -46,7 +46,7 @@
 	</ItemGroup>
 
 	<ItemGroup Condition="'$(TargetFramework)' == 'net462' Or '$(TargetFramework)' == 'net47' Or '$(TargetFramework)' == 'netstandard2.0'">
-		<PackageReference Include="System.Collections.Immutable" Version="10.0.8" />
+		<PackageReference Include="System.Collections.Immutable" Version="10.0.9" />
 	</ItemGroup>
 
 	<ItemGroup Condition="'$(TargetFramework)' == 'net462'">