banip: update 1.8.1-3

banip: update 1.8.1-3

* add better input validation to the f_content and f_search functions,
   to compensate for the very limited Wildcard ACL mechanisms in LuCI, see
   https://github.com/openwrt/luci/issues/8435 for reference
* LuCI: add a proper poll mechanism to mitigate Reporting timeouts
  on "Search" and "Refresh", even with big  Sets
* LuCI: Refine some ACLs
* LuCI: more fixes & optimizations
* readme update

Signed-off-by: Dirk Brenken <redacted>