chore: exclude generate_csv_database.py from test coverage

Author: HarrisonKramer

optiland/database/generate_csv_database.py

@@ -4,6 +4,7 @@
 The csv file is used directly in Optiland to retrieve material data. See
 the Material class in optiland.materials.py for more information.
 """
+# pragma: no cover
 import os
 from io import StringIO
 import yaml