main/postmarketos-base-ui: Fix sleep-inhibitor installation on openrc (MR 6062)

[ci:skip-build]: already built successfully in CI (except armhf, due to known qemu issue)

main/postmarketos-base-ui/APKBUILD

 # Maintainer: Clayton Craft <clayton@craftyguy.net>
 pkgname=postmarketos-base-ui
 pkgver=31
-pkgrel=1
+pkgrel=2
 pkgdesc="Meta package for minimal postmarketOS UI base"
 url="https://postmarketos.org"
 arch="noarch"
@@ -155,7 +155,7 @@ _openrc() {
 elogind() {
 	install_if="$pkgname=$pkgver-r$pkgrel elogind"
 	install="$subpkgname.post-install"
-	depends="!systemd-logind"
+	depends="!systemd-logind sleep-inhibitor-openrc"
 	replaces="
 		elogind
 		sleep-inhibitor