FIX: Replaced deprecated Logger.warn()

src/caosdb/connection/connection.py

@@ -178,7 +178,7 @@ class _DefaultCaosDBServerConnection(CaosDBServerConnection):
         context.verify_mode = ssl.CERT_REQUIRED
 
         if config.get("ssl_insecure"):
-            _LOGGER.warn("*** Warning! ***\n"
+            _LOGGER.warning("*** Warning! ***\n"
                             "Insecure SSL mode, certificate will not be checked! "
                             "Please consider removing the `ssl_insecure` configuration option.\n"
                             "****************")