PIPELINE: Rename to linkahead for __version__ variable in Python 3.9

.gitlab-ci.yml

@@ -131,7 +131,7 @@ unittest_py39:
   script:
     # First verify that system Python actually is 3.9
     - python3 -c "import sys; assert sys.version.startswith('3.9')"
-    - python3 -c "import caosdb; print('CaosDB Version:', caosdb.__version__)"
+    - python3 -c "import linkahead; print('LinkAhead Version:', linkahead.__version__)"
     - tox
 
 unittest_py37: