unicode: update the width tables to Unicode 15.1

Unicode 15.1 has been announced on 2023-09-12 [0], so update the
character width tables to the new version.

[0] http://blog.unicode.org/2023/09/announcing-unicode-standard-version-151.html

Signed-off-by: Beat Bolli <dev+git@drbeat.li>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

unicode-width.h

@@ -396,14 +396,13 @@ static const struct interval double_width[] = {
 { 0x2E80, 0x2E99 },
 { 0x2E9B, 0x2EF3 },
 { 0x2F00, 0x2FD5 },
-{ 0x2FF0, 0x2FFB },
-{ 0x3000, 0x303E },
+{ 0x2FF0, 0x303E },
 { 0x3041, 0x3096 },
 { 0x3099, 0x30FF },
 { 0x3105, 0x312F },
 { 0x3131, 0x318E },
 { 0x3190, 0x31E3 },
-{ 0x31F0, 0x321E },
+{ 0x31EF, 0x321E },
 { 0x3220, 0x3247 },
 { 0x3250, 0x4DBF },
 { 0x4E00, 0xA48C },