Bump Grpc.Net.Client from 2.71.0 to 2.76.0

---
updated-dependencies:
- dependency-name: Grpc.Net.Client
  dependency-version: 2.76.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

src/Extensions.Grok/Extensions.Grok.csproj

@@ -16,7 +16,7 @@
   <ItemGroup>
     <PackageReference Include="Google.Protobuf" Version="3.33.2" />
     <PackageReference Include="GrokClient" Version="1.1.0" />
-    <PackageReference Include="Grpc.Net.Client" Version="2.71.0" />
+    <PackageReference Include="Grpc.Net.Client" Version="2.76.0" />
     <PackageReference Include="Grpc.Tools" Version="2.76.0" PrivateAssets="all" />
     <PackageReference Include="NuGetizer" Version="1.4.6" PrivateAssets="all" />
     <PackageReference Include="Microsoft.Extensions.AI.Abstractions" Version="10.1.1" />