Update dependency Polyfill to v4.1.0 (#666)

+semver:patch

Author: renovate[bot]

src/Directory.Build.props

@@ -31,6 +31,6 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All"/>
-    <PackageReference Include="Polyfill" Version="4.0.0" PrivateAssets="All"/>
+    <PackageReference Include="Polyfill" Version="4.1.0" PrivateAssets="All"/>
   </ItemGroup>
 </Project>