build: bump System.Memory.Data and System.Text.Json

Bumps [System.Memory.Data](https://github.com/dotnet/runtime) and [System.Text.Json](https://github.com/dotnet/runtime). These dependencies needed to be updated together.

Updates `System.Memory.Data` from 8.0.0 to 9.0.2
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v8.0.0...v9.0.2)

Updates `System.Text.Json` from 8.0.5 to 9.0.2
- [Release notes](https://github.com/dotnet/runtime/releases)
- [Commits](dotnet/runtime@v8.0.5...v9.0.2)

---
updated-dependencies:
- dependency-name: System.Memory.Data
  dependency-type: direct:production
  update-type: version-update:semver-major
- 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]

Services/src/kernel-memory/service/Abstractions/Abstractions.csproj

@@ -22,9 +22,9 @@
         <PackageReference Include="Microsoft.Extensions.Hosting" Version="8.0.0" />
         <PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="8.0.1" />
         <PackageReference Include="Microsoft.SemanticKernel.Abstractions" Version="1.16.1" />
-        <PackageReference Include="System.Memory.Data" Version="8.0.0" />
+        <PackageReference Include="System.Memory.Data" Version="9.0.3" />
         <PackageReference Include="System.Numerics.Tensors" Version="9.0.2" />
-        <PackageReference Include="System.Text.Json" Version="8.0.4" />
+        <PackageReference Include="System.Text.Json" Version="9.0.3" />
     </ItemGroup>
 
     <ItemGroup>