Update Google_GenerativeAI.Microsoft to 2.5.8

---
updated-dependencies:
- dependency-name: Google_GenerativeAI.Microsoft
  dependency-version: 2.5.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: Microsoft.DotNet.ILCompiler
  dependency-version: 9.0.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: Microsoft.NET.ILLink.Tasks
  dependency-version: 9.0.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: Microsoft.NET.ILLink.Tasks
  dependency-version: 9.0.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: Microsoft.NET.ILLink.Tasks
  dependency-version: 9.0.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: System.Text.Json
  dependency-version: 9.0.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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="2.5.6" />
+        <PackageReference Include="Google_GenerativeAI.Microsoft" Version="2.5.8" />
         <PackageReference Include="H.Generators.Tests.Extensions" Version="1.24.2" />
         <PackageReference Include="H.Resources.Generator" Version="1.8.0">
             <PrivateAssets>all</PrivateAssets>