Bump Microsoft.Extensions.Http from 3.1.9 to 5.0.0

Bumps [Microsoft.Extensions.Http](https://github.com/dotnet/runtime) from 3.1.9 to 5.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](https://github.com/dotnet/runtime/commits)

src/Falu/Falu.csproj

@@ -11,7 +11,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.Extensions.Http" Version="3.1.9" />
+    <PackageReference Include="Microsoft.Extensions.Http" Version="5.0.0" />
     <PackageReference Include="Tingle.Extensions.JsonPatch" Version="3.0.0" />
   </ItemGroup>