speed up siren info fetching

lib/download/siren_info.py

@@ -87,7 +87,7 @@ def main():
             siren = line.strip()
             if siren:
                 # delay to avoid 429 "Too many requests"
-                time.sleep(1)
+                time.sleep(0.2)
 
                 res = get_coords_by_siren(siren)
                 if res['status'] == 'err':