main/irssi: upgrade to 0.8.20

ref #6204

main/irssi/APKBUILD

 # Maintainer: Kiyoshi Aman <kiyoshi.aman@gmail.com>
 pkgname=irssi
-pkgver=0.8.19
-pkgrel=1
+pkgver=0.8.20
+pkgrel=0
 pkgdesc="A modular textUI IRC client with IPv6 support"
 url="http://irssi.org/"
 arch="all"
@@ -67,6 +67,6 @@ proxy() {
 	mv "$pkgdir"/usr/lib/irssi/modules/libirc_proxy.* "$subpkgdir"/usr/lib/irssi/modules/
 }
 
-md5sums="98c0d15c8f752a595520d817e1cb5667  irssi-0.8.19.tar.xz"
-sha256sums="4ca0040548e814ea93eb7d602ab7d6d379afcbbdf10e84160523ce69c73ee5d3  irssi-0.8.19.tar.xz"
-sha512sums="45578a33b408ebf7d896b9576dffc4ca95897933be50cc1c2fcb8988a6ad86a10087fba5f74f0a2eb1d615fb3f30e57500f5175ef2dbada1de5a33b20abacb61  irssi-0.8.19.tar.xz"
+md5sums="67d48c5feec2d3b949d088aa4abc3601  irssi-0.8.20.tar.xz"
+sha256sums="7882c4e821f5aac469c5e69e69d7e235f4986101285c675e81a9a95bfb20505a  irssi-0.8.20.tar.xz"
+sha512sums="ace39022a3e7461fc33cbd0e8c6635aa84c67fc4f6364b66747f860a4538a4b17bbd677e342fbfa9ae7e97783745f8d7dab350a27330ce14f1702386231296b1  irssi-0.8.20.tar.xz"