community/btrbk: upgrade to 0.28.2

https://github.com/digint/btrbk/blob/master/ChangeLog

Closes: GH-8033

community/btrbk/APKBUILD

 # Contributor: Stuart Cardall <developer@it-offshore.co.uk>
 # Maintainer: Stuart Cardall <developer@it-offshore.co.uk>
 pkgname=btrbk
-pkgver=0.28.0
+pkgver=0.28.2
 pkgrel=0
 pkgdesc="Backup tool for btrfs subvolumes with atomic snapshots & incremental transfers"
 url="https://digint.ch/btrbk"
 arch="noarch"
 license="GPL-3.0-or-later"
 depends="perl perl-date-calc btrfs-progs"
-makedepends="asciidoc"
+makedepends="asciidoctor"
 subpackages="$pkgname-doc"
+options="!check" # no test suite available
 source="https://digint.ch/download/btrbk/releases/$pkgname-$pkgver.tar.xz"
-builddir="$srcdir"/$pkgname-$pkgver
-
-check() {
-	cd "$builddir"
-	./btrbk -h > /dev/null
-}
 
 package() {
-	cd "$builddir"
 	make DESTDIR="$pkgdir" BINDIR="/usr/bin" install
-	rm -rf "$pkgdir"/usr/lib # systemd scripts
+	mkdir -p "$pkgdir"-doc/usr/share/btrbk
+	cp -rf "$srcdir"/$pkgname-$pkgver/contrib "$pkgdir"-doc/usr/share/btrbk
+	rm -rf "$pkgdir"/usr/lib "$pkgdir"-doc/usr/share/btrbk/contrib/systemd # systemd scripts
 }
 
-sha512sums="f4f3118daf55a80604dafec77087851860cfab8720d3f193ac4eec804ca39e60e3bb31d7feb45dd10c8b35b2844c680462a16f2ac0bdbd71731907f511bdc358  btrbk-0.28.0.tar.xz"
+sha512sums="43e9e0dfe48b0b0c8d1b64e2ce447b9dde9c494b2ad233d68e6ad0648d746d1e950751199f72affe77e06b0c94567912b399bd0b6aa8ebc31dd8fb87ef9ae0ae  btrbk-0.28.2.tar.xz"