Bump System.Text.Json from 7.0.2 to 9.0.0

Bumps [System.Text.Json](https://github.com/dotnet/runtime) from 7.0.2 to 9.0.0.
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v7.0.2...v9.0.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

src/NRedisStack/NRedisStack.csproj

@@ -17,7 +17,7 @@
 
   <ItemGroup>
 	<PackageReference Include="NetTopologySuite" Version="2.5.0" />
-	<PackageReference Include="System.Text.Json" Version="7.0.2" Condition="'$(TargetFramework)' == 'netstandard2.0'" />
+	<PackageReference Include="System.Text.Json" Version="9.0.0" Condition="'$(TargetFramework)' == 'netstandard2.0'" />
 	<PackageReference Include="StackExchange.Redis" Version="2.8.16" />
 	<None Include="..\..\README.md" Pack="true" PackagePath="\" />
   </ItemGroup>