upgrel: 6.6-9, icu rebuild

diff/patch/PKG.patch

 diff -uar a/PKGBUILD b/PKGBUILD
 --- a/PKGBUILD
 +++ b/PKGBUILD
+@@ -7,7 +7,7 @@
+ pkgbase=brltty
+ pkgname=(brltty brltty-udev-generic)
+ pkgver=6.6
+-pkgrel=8
++pkgrel=9
+ pkgdesc="Braille display driver for Linux/Unix"
+ arch=(x86_64)
+ url="https://brltty.app"
 @@ -20,7 +20,7 @@
    bluez-libs
    cython0