testing/py3-protego: upgrade to 0.3.1

https://github.com/scrapy/protego/releases/tag/0.3.1

testing/py3-protego/APKBUILD

 # Contributor: prspkt <prspkt@protonmail.com>
 # Maintainer: prspkt <prspkt@protonmail.com>
 pkgname=py3-protego
-pkgver=0.3.0
-pkgrel=2
+pkgver=0.3.1
+pkgrel=0
 pkgdesc="Pure-Python robots.txt parser with support for modern conventions"
 url="https://github.com/scrapy/protego"
 arch="noarch"
@@ -32,5 +32,5 @@ package() {
 }
 
 sha512sums="
-cb1209f93ed5dd6dc91d517107837c780e2138efa7766a9f6d00bd22d7b1904a5db5edb08db83bde34571735245d702db3a5c67970103dc77859bb4c9024e863  Protego-0.3.0.tar.gz
+2ec2b7f5d27f7e69a0513f59c6916f5b022c89706a78e65f222d4e8470390b0bef342e341fd6f861e72cf448a0bfe3f0c23fb2ffe94fc8a14a9a1b501c890d06  Protego-0.3.1.tar.gz
 "