Update dependency System.Text.Json to v8 (#1360)

* Update dependency System.Text.Json to v8

* Pin System.Text.Json for analyzers

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Andrew Arnott <[email protected]>

Author: renovate[bot]

Directory.Packages.Analyzers.props

@@ -12,5 +12,6 @@
     <PackageVersion Update="System.Reflection.Metadata" Version="5.0.0" />
     <PackageVersion Update="System.Runtime.CompilerServices.Unsafe" Version="5.0.0" />
     <PackageVersion Include="System.Text.Encodings.Web" Version="4.7.1" />
+    <PackageVersion Update="System.Text.Json" Version="4.7.2" />
   </ItemGroup>
 </Project>

Directory.Packages.props

@@ -31,7 +31,7 @@
     <PackageVersion Include="System.Memory" Version="4.6.0" />
     <PackageVersion Include="System.Reflection.Metadata" Version="8.0.1" />
     <PackageVersion Include="System.Runtime.CompilerServices.Unsafe" Version="6.1.0" />
-    <PackageVersion Include="System.Text.Json" Version="4.7.2" />
+    <PackageVersion Include="System.Text.Json" Version="8.0.5" />
     <PackageVersion Include="Xunit.Combinatorial" Version="2.0.24" />
     <PackageVersion Include="Xunit.Assert" Version="2.9.3" />
   </ItemGroup>