community/cabal: take maintainership

Previous maintainer hasn't been active for years.

community/cabal/APKBUILD

 # Contributor: Steeve Chailloux <steeve.chailloux@orus.io>
 # Contributor: Sören Tempel <soeren+alpine@soeren-tempel.net>
-# Maintainer: Mitch Tishmack <mitch.tishmack@gmail.com>
+# Contributor: Mitch Tishmack <mitch.tishmack@gmail.com>
+# Maintainer: Sören Tempel <soeren+alpine@soeren-tempel.net>
 pkgname=cabal
 pkgver=3.10.1.0
-pkgrel=1
+pkgrel=2
 pkgdesc="The Haskell Cabal"
 url="https://haskell.org/cabal"
 arch="aarch64 x86_64" # Limited by GHC