Merge pull request #50 from GreptimeTeam/dependabot/nuget/grpc-499721c613

Bump the grpc group with 1 update

Author: killme2008

Directory.Packages.props

@@ -5,7 +5,7 @@
 
   <ItemGroup>
     <!-- gRPC -->
-    <PackageVersion Include="Grpc.Net.Client" Version="2.76.0" />
+    <PackageVersion Include="Grpc.Net.Client" Version="2.80.0" />
     <PackageVersion Include="Grpc.Tools" Version="2.80.0" />
     <PackageVersion Include="Google.Protobuf" Version="3.34.1" />