Fixed project file

Author: DenSmoke

src/Firebase.Auth/Firebase.Auth.csproj

@@ -11,8 +11,7 @@
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>
     <PackageReference Include="Microsoft.Extensions.Http" Version="3.1.2" />
-    <PackageReference Include="System.Text.Json" Version="4.7.0" Condition="'$(TargetFramework)'=='netstandard2.0'" />
-    <PackageReference Include="System.Text.Json" Version="4.7.1" />
+    <PackageReference Include="System.Text.Json" Version="4.7.1" Condition="'$(TargetFramework)'=='netstandard2.0'" />
   </ItemGroup>
 
 </Project>