snapper: rebuild against boost + upgrade [skip-ci]

snapper/PKGBUILD

@@ -1,6 +1,6 @@
 pkgname=snapper
-pkgver=0.5.0
-pkgrel=3
+pkgver=0.5.4
+pkgrel=1
 pkgdesc="A tool for managing BTRFS and LVM snapshots. It can create, diff and restore snapshots and provides timelined auto-snapping."
 arch=('x86_64')
 url="http://snapper.io"
@@ -9,14 +9,11 @@ depends=('btrfs-progs' 'libxml2' 'dbus' 'boost-libs' 'acl')
 makedepends=('boost' 'lvm2' 'libxslt' 'docbook-xsl' 'pam' 'git' 'systemd')
 optdepends=('pam: pam_snapper')
 backup=('etc/conf.d/snapper')
-source=("ftp://ftp.suse.com/pub/projects/$pkgname/$pkgname-$pkgver.tar.bz2"
-        "iostream.patch::https://patch-diff.githubusercontent.com/raw/openSUSE/snapper/pull/355.patch")
-sha256sums=('8876b6fa946dc46df5dcbaf747bb11ac4c5a3418dd59c5ba09c47910cbad1835'
-            '20ed5678ff102b8d9ef3c11e38d0f83cc2214b3fca088613bba3154ee4c13bcd')
+source=("ftp://ftp.suse.com/pub/projects/$pkgname/$pkgname-$pkgver.tar.bz2")
+sha256sums=('5af181423fb2b272ad45c6a38501aad13f87f3efb0b3d37595b795ec1afab7f2')
 
 prepare() {
   cd "$srcdir/$pkgname-$pkgver"
-  patch -p1 -i "$srcdir/iostream.patch"
 
   # cron names
   sed -e 's@suse.de-snapper@snapper@g' -i scripts/Makefile.am