quote postgres dbconn uri to avoid weird issues with special chars

tests/test_postgresql.py

@@ -190,7 +190,7 @@ def check_psql(db_conn: dict, query: str) -> tuple:
         uri = "postgresql:///{}".format(db_conn["dbname"])
 
     # format command
-    command = ["su -l postgres -c \"psql {} -c '{}'\"".format(uri, query)]
+    command = ["su -l postgres -c \"psql '{}' -c '{}'\"".format(uri, query)]
 
     # execute
     try: