Install grpcio-tools in the build github action

This is necessary given changes in justfile which run protogen.

Signed-off-by: Shawn T. Amundson <amundson@bitwise.io>

Author: vaporos

.github/workflows/build.yml

@@ -33,6 +33,8 @@ jobs:
           curl -OLsS https://github.com/google/protobuf/releases/download/v3.5.1/protoc-3.5.1-linux-x86_64.zip
           unzip protoc-3.5.1-linux-x86_64.zip -d protoc3
           rm protoc-3.5.1-linux-x86_64.zip
+      - name: Install Python dependencies
+        run: pip install grpcio-tools
       - name: Lint
         run: PATH=$PATH:$(pwd)/protoc3/bin just lint
       - name: Build