Secure send: hand somebody a password without leaving it in a chat window

shopdb/plugins/alembic_template.py

@@ -67,6 +67,7 @@ PLUGIN_TABLE_OWNERS: dict[str, Iterable[str]] = {
                       'printeditemfiles'),
     'printers':      ('printertypes', 'printers', 'modelsupplies', 'printerdrivers',
                       'printersupplyalerts', 'printerobservedqueues'),
+    'securesend':    ('securesendsecrets',),
     'slides':        ('tvslides',),
     'usb':           ('usbdevicetypes', 'usbdevices', 'usbcheckouts'),
     'warranty':      ('warranties', 'warrantyassets'),