testing/gpg-remailer: add missing dependencies

testing/gpg-remailer/APKBUILD

@@ -2,11 +2,12 @@
 # Maintainer: Shiz <hi@shiz.me>
 pkgname=gpg-remailer
 pkgver=3.02.01
-pkgrel=0
+pkgrel=1
 pkgdesc="Decrypt GPG messages and re-encrypt them to a well-defined group"
 url="https://fbb-git.github.io/gpg-remailer/"
 arch="all"
 license="GPL3+"
+depends="gnupg mailutils"
 makedepends="icmake bash yodl bobcat-dev"
 subpackages="$pkgname-doc"
 source="gpg-remailer-$pkgver.tar.gz::https://github.com/fbb-git/gpg-remailer/archive/$pkgver.tar.gz