Upgrade nuget package

Author: Jericho

Source/HttpMultipartParser/HttpMultipartParser.csproj

@@ -40,7 +40,7 @@
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.0.0" PrivateAssets="All" />
     <PackageReference Include="Microsoft.IO.RecyclableMemoryStream" Version="1.3.3" />
     <PackageReference Include="StyleCop.Analyzers" Version="1.1.118" PrivateAssets="All" />
-    <PackageReference Include="System.Buffers" Version="4.5.0" />
+    <PackageReference Include="System.Buffers" Version="4.5.1" />
   </ItemGroup>
 
   <ItemGroup Condition=" !$(TargetFramework.StartsWith('netstandard')) ">