chore: upgrade vs threading analyzers to 17.4.27 (#17)

Author: ikesnowy

src/Cnblogs.CodeQuality.nuspec

@@ -16,7 +16,7 @@
     <description>Roslyn analyzer rulesets used by Cnblogs</description>
     <dependencies>
       <dependency id="StyleCop.Analyzers" version="1.2.0-beta.435" />
-      <dependency id="Microsoft.VisualStudio.Threading.Analyzers" version="17.3.44" />
+      <dependency id="Microsoft.VisualStudio.Threading.Analyzers" version="17.4.27" />
     </dependencies>
   </metadata>
 </package>