Revert "lutris: update to 0.5.19."

Although upstream tagged this many months ago, it does not appear to
have official sanction and is not included in the list of releases.

This reverts commit e6e2a1dc09.

srcpkgs/lutris/template

@@ -1,7 +1,8 @@
 # Template file for 'lutris'
 pkgname=lutris
-version=0.5.19
-revision=1
+reverts="0.5.19_1"
+version=0.5.18
+revision=3
 build_style=meson
 hostmakedepends="gettext python3-setuptools python3-gobject gtk+3-devel"
 depends="python3-dbus python3-gobject python3-yaml python3-evdev python3-Pillow
@@ -13,4 +14,4 @@ license="GPL-3.0-or-later"
 homepage="https://lutris.net"
 changelog="https://raw.githubusercontent.com/lutris/lutris/master/debian/changelog"
 distfiles="https://github.com/lutris/lutris/archive/v${version}.tar.gz"
-checksum=54edba892517473920b04423037dd480afb5e3b5e197040db33d15b1535d5096
+checksum=b9d4ad052d1c750910940d5cc7c583967c0c65c1584b7f4a1abaf46e40c3d8d1