chore: bump the system group across 3 directories with 1 update (#1258)

Bumps the system group with 1 update in the /DubUrl.Adomd.Testing directory: [System.Text.Json](https://github.com/dotnet/runtime).
Bumps the system group with 1 update in the /DubUrl.OleDb.Testing directory: [System.Text.Json](https://github.com/dotnet/runtime).
Bumps the system group with 1 update in the /DubUrl.Testing directory: [System.Text.Json](https://github.com/dotnet/runtime).


Updates `System.Text.Json` from 8.0.5 to 9.0.0
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v8.0.5...v9.0.0)

Updates `System.Text.Json` from 8.0.5 to 9.0.0
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v8.0.5...v9.0.0)

Updates `System.Text.Json` from 8.0.5 to 9.0.0
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v8.0.5...v9.0.0)

---
updated-dependencies:
- dependency-name: System.Text.Json
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: system
- dependency-name: System.Text.Json
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: system
- dependency-name: System.Text.Json
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: system
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

DubUrl.Adomd.Testing/DubUrl.Adomd.Testing.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="Appveyor.TestLogger" Version="2.0.0" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="System.Text.Json" Version="8.0.5" />
+    <PackageReference Include="System.Text.Json" Version="9.0.0" />
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="coverlet.msbuild" Version="6.0.2">

DubUrl.OleDb.Testing/DubUrl.OleDb.Testing.csproj

@@ -22,7 +22,7 @@
     </PackageReference>
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="System.Text.Json" Version="8.0.5" />
+    <PackageReference Include="System.Text.Json" Version="9.0.0" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\DubUrl.OleDb\DubUrl.OleDb.csproj" />

DubUrl.Testing/DubUrl.Testing.csproj

@@ -22,7 +22,7 @@
     <PackageReference Include="System.Data.OleDb" Version="9.0.0" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="System.Text.Json" Version="8.0.5" />
+    <PackageReference Include="System.Text.Json" Version="9.0.0" />
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />