fix (atlas_synthese.sql): avoid the error geometry does not exist

With pg_restore the search_path is not set to public. So, the error "geometry does not exist" is raised.

data/gn2/atlas_synthese.sql

@@ -31,7 +31,7 @@ CREATE OR REPLACE FUNCTION atlas.get_blurring_centroid_geom_by_code(code CHARACT
  IMMUTABLE
 AS $function$
 	-- Function which return the centroid for a sensitivity or diffusion_level code and a synthese id
-	DECLARE centroid geometry;
+	DECLARE centroid public.geometry;
 
 	BEGIN
 		SELECT INTO centroid csa.centroid_4326