main/postmarketos-base-ui-gnome: Move fprintd from depends to pmb_recommends

It's an optional service, thus users should be free to remove it.

Fixes: 5cffcf7ea ("main/postmarketos-base-ui-gnome: add fprintd to depends (MR 6206)")

Part-of: https://gitlab.postmarketos.org/postmarketOS/pmaports/-/merge_requests/6300
[ci:skip-build]: already built successfully in CI

main/postmarketos-base-ui-gnome/APKBUILD

@@ -3,14 +3,13 @@
 # Co-Maintainer: fossdd <fossdd@pwned.life>
 pkgname=postmarketos-base-ui-gnome
 pkgver=4
-pkgrel=8
+pkgrel=9
 pkgdesc="Meta package for shared configuration for GNOME-based UIs"
 url="https://postmarketos.org"
 arch="noarch"
 license="GPL-3.0-or-later"
 depends="
 	dnsmasq
-	fprintd
 	gcr-ssh-agent
 	gnome-bluetooth
 	gnome-keyring
@@ -38,6 +37,7 @@ _pmb_recommends="
 	ffmpegthumbnailer
 	firefox-esr
 	flatpak
+	fprintd
 	gnome-calculator
 	gnome-calendar
 	gnome-clocks