chore(internal/gapicgen): fix genbot
Go tooling was failing due to inconsistencies between protoc-gen-go
versions. This was caused by
Tested locally and the Dockerfile now builds.
@@ -29,7 +29,7 @@ RUN go version
# Install Go tools.
RUN GO111MODULE=on go get \
- github.com/golang/protobuf/protoc-gen-go@v1.4.1 \
+ github.com/golang/protobuf/protoc-gen-go@v1.4.2 \
golang.org/x/lint/golint@latest \
golang.org/x/tools/cmd/goimports@latest \
honnef.co/go/tools/cmd/staticcheck@latest \
