main/rarian: fix license expression

This package is licensed under the three liecneses originally in the
APKBUILD, but whether or not they applied simultaneously or the project
was dual-licensed was ambiguous. Changing the license expression to a
valid SPDX expression fixes this ambiguity.

main/rarian/APKBUILD

 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=rarian
 pkgver=0.8.1
-pkgrel=10
+pkgrel=11
 pkgdesc="Documentation meta-data library, designed as a replacement for Scrollkeeper."
 url="https://rarian.freedesktop.org/"
 arch="all"
 options="!check"  # No test suite.
-license="GPL-2.0+, LGPL-2.1+, Zlib"
+license="GPL-2.0-or-later AND LGPL-2.1-or-later AND Zlib"
 subpackages="$pkgname-dev"
 depends="bash"
 makedepends="libxslt-dev"