gnu: network-manager-openvpn: Update to 1.8.12.

* gnu/packages/gnome.scm (network-manager-openvpn): Update to 1.8.12.
[inputs]: Replace 'network-manager-applet' with 'libnma'.

gnu/packages/gnome.scm

@@ -6519,8 +6519,7 @@ services.")
 (define-public network-manager-openvpn
   (package
     (name "network-manager-openvpn")
-    ;; Updating?  Check whether network-manager-applet still needs libnm_gtk.
-    (version "1.8.10")
+    (version "1.8.12")
     (source (origin
               (method url-fetch)
               (uri (string-append
@@ -6529,7 +6528,7 @@ services.")
                     "/NetworkManager-openvpn-" version ".tar.xz"))
               (sha256
                (base32
-                "1vri49yff4lj13dnzkpq9nx3a4z1bmbrv807r151plj8m1mwhg5g"))))
+                "062kh4zj7jfbwy4zzcwpq2m457bzbpm3l18s0ysnw3mgia3siz8f"))))
     (build-system gnu-build-system)
     (arguments
      `(#:configure-flags '("--enable-absolute-paths" "--localstatedir=/var")
@@ -6559,7 +6558,7 @@ services.")
        ("kmod" ,kmod)
        ("openvpn" ,openvpn)
        ("network-manager" ,network-manager)
-       ("network-manager-applet" ,network-manager-applet) ;for libnma
+       ("libnma" ,libnma)
        ("libsecret" ,libsecret)))
     (home-page "https://wiki.gnome.org/Projects/NetworkManager/VPN")
     (synopsis "OpenVPN plug-in for NetworkManager")