travelmate: release 2.4.6-1

travelmate: release 2.4.6-1

- fix uplink teardown for bssid-pinned stations
  the new implementaion reads the sta object once and parses fields by name via jshn
  (isolated namespace, single fork). Bug finder: @adam8833 (#29768)
- add a fork-free f_normbssid() helper and normalize all config-side bssids
  to upper case before comparison (in f_getcfg(), covering all callers, and
  on the direct scan comparisons in f_main()).
- LuCI:  adds a normBssid() helper function as well

Signed-off-by: Dirk Brenken <redacted>