add shyaml dep

Author: fredshone

.github/workflows/build_pipeline.yml

@@ -26,6 +26,7 @@ jobs:
         export C_INCLUDE_PATH=/usr/include/gdal
         sudo apt-get install ca-certificates
         export CURL_CA_BUNDLE=/etc/ssl/certs/ca-certificates.crt
+        pip install pyyaml==5.4.1 shyaml
         pip install GDAL==3.4.1
         pip install .
     - name: Check install