Bump Microsoft.ML.OnnxRuntime from 1.25.1 to 1.26.0 (#309)

---
updated-dependencies:
- dependency-name: Microsoft.ML.OnnxRuntime
  dependency-version: 1.26.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]

src/OpenClaw.Shared/OpenClaw.Shared.csproj

@@ -19,7 +19,7 @@
   <ItemGroup>
     <PackageReference Include="Whisper.net" Version="1.9.0" />
     <PackageReference Include="Whisper.net.Runtime" Version="1.9.0" />
-    <PackageReference Include="Microsoft.ML.OnnxRuntime" Version="1.25.1" />
+    <PackageReference Include="Microsoft.ML.OnnxRuntime" Version="1.26.0" />
   </ItemGroup>
 
 </Project>