build(deps): Bump the all group with 2 updates

Bumps the all group with 2 updates: [Google_GenerativeAI.Microsoft](https://github.com/gunpal5/Google_GenerativeAI) and [Microsoft.Extensions.AI](https://github.com/dotnet/extensions).


Updates `Google_GenerativeAI.Microsoft` from 2.5.5 to 2.5.6
- [Release notes](https://github.com/gunpal5/Google_GenerativeAI/releases)
- [Changelog](https://github.com/gunpal5/Google_GenerativeAI/blob/main/CHANGELOG.md)
- [Commits](gunpal5/Google_GenerativeAI@v2.5.5...v2.5.6)

Updates `Microsoft.Extensions.AI` from 9.4.0-preview.1.25207.5 to 9.4.0-preview.1.25207.5
- [Release notes](https://github.com/dotnet/extensions/releases)
- [Commits](https://github.com/dotnet/extensions/commits)

---
updated-dependencies:
- dependency-name: Google_GenerativeAI.Microsoft
  dependency-version: 2.5.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all
- dependency-name: Microsoft.Extensions.AI
  dependency-version: 9.4.0-preview.1.25207.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all
...

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

Author: dependabot[bot]

src/tests/CSharpToJsonSchema.MeaiTests/CSharpToJsonSchema.MeaiTests.csproj

@@ -9,7 +9,7 @@
             <PrivateAssets>all</PrivateAssets>
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>
-        <PackageReference Include="Google_GenerativeAI.Microsoft" Version="2.5.5" />
+        <PackageReference Include="Google_GenerativeAI.Microsoft" Version="2.5.6" />
         <PackageReference Include="H.Generators.Tests.Extensions" Version="1.24.2" />
         <PackageReference Include="H.Resources.Generator" Version="1.8.0">
             <PrivateAssets>all</PrivateAssets>