wireless-regdb: Expand 60 GHz band for Japan to 57-66 GHz

The official documents are not feely available, but based on
summaries such as [1] and numerous third-party resources the 60
GHz band in Japan has been 57-66 GHz for some time now. Update
our rules accordingly.

[1] https://webstore.arib.or.jp/en/products/detail.php?product_id=288

Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
diff --git a/db.txt b/db.txt
index 3bdc7c0..d47ab94 100644
--- a/db.txt
+++ b/db.txt
@@ -663,7 +663,7 @@
 	(5490 - 5710 @ 160), (23), DFS
 	# 60 GHz band channels 2-4 at 10mW,
 	# ref: http://www.arib.or.jp/english/html/overview/doc/1-STD-T74v1_1.pdf
-	(59000 - 66000 @ 2160), (10 mW)
+	(57000 - 66000 @ 2160), (10 mW)
 
 country KE: DFS-JP
 	(2402 - 2482 @ 40), (20)