fix(deps): Update dependency grpcio-tools to v1.68.0 (#133)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [grpcio-tools](https://grpc.io) | minor | `==1.67.1` -> `==1.68.0` |

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Author: cq-bot

requirements.txt

@@ -1,5 +1,5 @@
 black==24.10.0
-grpcio-tools==1.67.1
+grpcio-tools==1.68.0
 grpcio==1.68.0
 protobuf==5.28.3
 pyarrow==18.0.0