Bump System.Net.Http from 4.3.2 to 4.3.4 in /src

Bumps System.Net.Http from 4.3.2 to 4.3.4.

---
updated-dependencies:
- dependency-name: System.Net.Http
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

src/Avalara.AvaTax.RestClient.csproj

@@ -95,18 +95,18 @@
 	</ItemGroup>
 	<ItemGroup Condition="'$(TargetFramework)' == 'net472'">
 		<PackageReference Include="Newtonsoft.Json" Version="13.0.1" />
-		<PackageReference Include="System.Net.Http" Version="4.3.2" />
+		<PackageReference Include="System.Net.Http" Version="4.3.4" />
 		<Compile Include="..\GlobalAssemblyInfo.cs">
 			<Link>Properties\GlobalAssemblyInfo.cs</Link>
 		</Compile>
 	</ItemGroup>
 	<ItemGroup Condition="'$(TargetFramework)' == 'netstandard1.6'">
 		<PackageReference Include="Newtonsoft.Json" Version="12.0.1" />
-		<PackageReference Include="System.Net.Http" Version="4.3.2" />
+		<PackageReference Include="System.Net.Http" Version="4.3.4" />
 	</ItemGroup>
 	<ItemGroup Condition="'$(TargetFramework)' == 'netstandard2.0'">
 		<PackageReference Include="Newtonsoft.Json" Version="12.0.1" />
-		<PackageReference Include="System.Net.Http" Version="4.3.2" />
+		<PackageReference Include="System.Net.Http" Version="4.3.4" />
 	</ItemGroup>
 	<ItemGroup>