Azure pipelines agents are not correctly installing/linking bazelisk via https://github.com/envoyproxy/envoy/blob/master/ci/mac_ci_setup.sh. All calls to bazel are using the installed system binary, not the version requested by .bazelversion. This is not an issue in master currently because what is installed and the .bazelversion is the same (3.1.0). However, if the versions are different problems arise, e.g: #11208