Adapt the BESSY II example to follow the pypi backends versions.

Install these companion packages unpinned from PyPI instead of fixed git refs (commit hash / tag), so the dt4acc smoke test stays current with newly published releases instead of testing a stale snapshot.

Fixes #416

Author: gupichon-soleil

examples/use_cases/config/bessy2/bessy2.yaml

@@ -10,6 +10,9 @@ controls:
 - class: pyaml_cs_oa.controlsystem.OphydAsyncControlSystem
   prefix: 'pons:'
   name: live
+  catalog:
+    class: pyaml_cs_oa.dynamic_catalog.DynamicCatalog
+    backend: "EPICS"
 data_folder: /data/store
 arrays:
 - class: pyaml.arrays.magnet.Magnet