wireless-regdb: update to version 2026.05.30

wireless-regdb: update to version 2026.05.30

Change-log since version 2026.03.18, retrieved from the wireless-regdb mailing lists:
  wireless-regdb: update regulatory database based on preceding changes
  wireless-regdb: Update regulatory info for Brunei Darussalam (BN) for 2022
  wireless-regdb: allow 320MHz channel width for Russia
  wireless-regdb: Update 6 GHz rules for Hong Kong (HK)
  wireless-regdb: Update 5/6 GHz power rules for Russia (RU)
  wireless-regdb: Fix 60 GHz power unit for Ukraine (UA)
  wireless-regdb: Update 6 GHz rules for South Africa (ZA)
  wireless-regdb: Update 6 GHz rules for South Korea (KR)
  wireless-regdb: Update regulatory rules for Sri Lanka (LK)
  wireless-regdb: Add regulatory info for CEPT countries FO, GI, IM, SM and VA listed by WiFi Alliance

Signed-off-by: Hafiz Zafran <hfzz7@duck.com>
Link: https://github.com/openwrt/openwrt/pull/23594
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>