PSDK-162: Fix tags of date dims

Put them all to a dedicated tag(folder).
Date dims are not put to the corresponding folder in our Analytical Designer.
Also, the same date dim can be created from multiple columns (shared date dims).
So the tagging is useless here now, we should think about it in the future.

Author: jaceksan

gooddata-dbt/gooddata_dbt/dbt/tables.py

@@ -446,7 +446,11 @@ def make_date_datasets(table: DbtModelTable, existing_date_datasets: List[Dict])
                         "id": column.ldm_id,
                         "title": column.gooddata_ldm_title,
                         "description": column.description,
-                        "tags": [table.gooddata_ldm_title] + column.tags,
+                        # Put them all to a dedicated tag(folder).
+                        # Date dims are not put to the corresponding folder in our Analytical Designer.
+                        # Also, the same date dim can be created from multiple columns (shared date dims).
+                        # So the tagging is useless here now, we should think about it in the future.
+                        "tags": ["Date dimensions"],
                         "granularities": granularities,
                         "granularities_formatting": {
                             "title_base": "",