Bump Microsoft.ML.Tokenizers and System.Text.Json in /dotnet

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

Updates `Microsoft.ML.Tokenizers` from 0.22.0-preview.24378.1 to 1.0.0
- [Release notes](https://github.com/dotnet/machinelearning/releases)
- [Commits](https://github.com/dotnet/machinelearning/commits/v1.0.0)

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

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

Signed-off-by: dependabot[bot] <[email protected]>

dotnet/Directory.Packages.props

@@ -50,7 +50,7 @@
     <PackageVersion Include="System.Text.Json" Version="8.0.5" />
     <PackageVersion Include="OllamaSharp" Version="4.0.6" />
     <!-- Tokenizers -->
-    <PackageVersion Include="Microsoft.ML.Tokenizers" Version="0.22.0-preview.24378.1" />
+    <PackageVersion Include="Microsoft.ML.Tokenizers" Version="1.0.0" />
     <PackageVersion Include="Microsoft.DeepDev.TokenizerLib" Version="1.3.3" />
     <PackageVersion Include="SharpToken" Version="2.0.3" />
     <!-- Microsoft.Extensions.* -->