[AZ-1132] Use system protoc in run-tests SDK container

Install protobuf-compiler and set PROTOBUF_PROTOC on arm64
where Grpc.Tools bundled protoc segfaults; align Woodpecker.

Co-authored-by: Cursor <cursoragent@cursor.com>

.woodpecker/01-test.yml

@@ -12,5 +12,7 @@ steps:
   - name: unit-tests
     image: mcr.microsoft.com/dotnet/sdk:10.0
     commands:
+      - apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends protobuf-compiler && rm -rf /var/lib/apt/lists/*
+      - export PROTOBUF_PROTOC=/usr/bin/protoc
       - dotnet restore SatelliteProvider.sln
       - dotnet test SatelliteProvider.Tests/SatelliteProvider.Tests.csproj --no-restore --configuration Release --logger "console;verbosity=normal" --logger "trx;LogFileName=test-results.trx" --results-directory /app/test-results