Use strict priority in build_docs.sh

Author: bdice

ci/build_docs.sh

@@ -6,6 +6,9 @@ set -euo pipefail
 rapids-logger "Create test conda environment"
 . /opt/conda/etc/profile.d/conda.sh
 
+rapids-logger "Configuring conda strict channel priority"
+conda config --set channel_priority strict
+
 RAPIDS_VERSION_MAJOR_MINOR="$(rapids-version-major-minor)"
 
 rapids-dependency-file-generator \