Refactor package references

Cherry-pick changes from #876.

Author: martincostello

Directory.Packages.props

@@ -18,8 +18,6 @@
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageVersion Include="ReportGenerator" Version="5.4.8" />
     <PackageVersion Include="Shouldly" Version="4.3.0" />
-    <PackageVersion Include="System.Net.Http.Json" Version="8.0.1" />
-    <PackageVersion Include="System.Text.Json" Version="[8.0.5,)" />
     <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.1" />
     <PackageVersion Include="xunit.v3" Version="2.0.3" />
   </ItemGroup>

src/MartinCostello.BrowserStack.Automate/MartinCostello.BrowserStack.Automate.csproj

@@ -11,10 +11,10 @@
   <PropertyGroup>
     <EnablePackageValidation>true</EnablePackageValidation>
   </PropertyGroup>
-  <ItemGroup Condition="!$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net8.0'))">
+  <ItemGroup Condition=" '$(TargetFramework)' == 'netstandard2.0' ">
     <PackageReference Include="Microsoft.AspNetCore.WebUtilities" VersionOverride="[2.3.0,)" />
     <PackageReference Include="System.Net.Http.Json" VersionOverride="[8.0.0,)" />
-    <PackageReference Include="System.Text.Json" />
+    <PackageReference Include="System.Text.Json" VersionOverride="[8.0.5,)" />
   </ItemGroup>
   <ItemGroup Condition="$([MSBuild]::IsTargetFrameworkCompatible('$(TargetFramework)', 'net8.0'))">
     <PackageReference Include="Microsoft.AspNetCore.WebUtilities" VersionOverride="[8.0.0,)" />