Use the GKE auth plugin in order to avoid spammy test output
Details here:
@@ -256,6 +256,7 @@ COPY --from=external-rust-gets /usr/local/cargo/bin/rcodesign /usr/local/bin/rco
RUN rm -f /usr/local/bin/source-gvm-and-run.sh
ENV PATH /go/bin:$PATH
+ENV USE_GKE_GCLOUD_AUTH_PLUGIN True
# Extract versions
RUN ko version > /ko_version
