Run bazelisk build

Runs bazelisk build with the specified targets.

**Role Variables**

.. zuul:rolevar:: bazelisk_targets
   :default: ["release"]

   The bazelisk targets to build.

.. zuul:rolevar:: bazelisk_executable
   :default: bazelisk

   The path to the bazelisk executable.

.. zuul:rolevar:: zuul_work_dir
   :default: {{ ansible_user_dir }}/{{ zuul.project.src_dir}}

   The working directory in which to run bazelisk.