Unpin our System.Net.Http package version

- shipped in the past patch

Author: dougbu

build/dependencies.props

@@ -4,6 +4,8 @@
     <!-- MicrosoftNETCoreApp21PackageVersion is assigned at the bottom so it can automatically pick up MicrosoftNETCoreAppPackageVersion in an orchestrated build. -->
     <MicrosoftNETCoreAppPackageVersion>2.1.9</MicrosoftNETCoreAppPackageVersion>
     <MicrosoftNETCoreDotNetAppHostPackageVersion>2.1.9</MicrosoftNETCoreDotNetAppHostPackageVersion>
+
+    <SystemNetHttpPackageVersion>4.3.4</SystemNetHttpPackageVersion>
  </PropertyGroup>
 
   <Import Project="$(DotNetPackageVersionPropsPath)" Condition="'$(DotNetPackageVersionPropsPath)' != ''" />
@@ -194,7 +196,6 @@
     <SystemDiagnosticsEventLogPackageVersion>4.5.0</SystemDiagnosticsEventLogPackageVersion>
     <SystemIdentityModelTokensJwtPackageVersion>5.2.0</SystemIdentityModelTokensJwtPackageVersion>
     <SystemInteractiveAsyncPackageVersion>3.1.1</SystemInteractiveAsyncPackageVersion>
-    <SystemNetHttpPackageVersion>4.3.2</SystemNetHttpPackageVersion>
     <SystemNumericsVectorsPackageVersion>4.5.0</SystemNumericsVectorsPackageVersion>
     <SystemReactiveLinqPackageVersion>3.1.1</SystemReactiveLinqPackageVersion>
     <SystemReflectionEmitPackageVersion>4.3.0</SystemReflectionEmitPackageVersion>