xscreensaver: include UPSTREAM_CHECK_URI to fix UNKNOWN_BROKEN status

Adding UPSTREAM_CHECK_URI fix UNKNOWN_BROKEN status from
running devtool check-upgrade-status.

The next version of the package can be found from upstream
sources.

Signed-off-by: Alexandre Truong <alexandre.truong@smile.fr>
Reviewed-by: Yoann Congal <yoann.congal@smile.fr>

meta-oe/recipes-graphics/xscreensaver/xscreensaver_6.04.bb

@@ -13,6 +13,8 @@ MIRRORS += "https://www.jwz.org/${BPN} https://ftp.osuosl.org/pub/blfs/conglomer
 
 SRC_URI[sha256sum] = "787014b29f0c5793ecc2d93e1109a049ff48ab0c29b851dab34f683ceef6b152"
 
+UPSTREAM_CHECK_URI = "https://www.jwz.org/xscreensaver/download.html"
+
 DEPENDS = "intltool-native libx11 libxext libxt libxft libxi glib-2.0-native bc-native libpam jpeg"
 # These are only needed as part of the stopgap screensaver implementation:
 RDEPENDS:${PN} = " \