[NetworkManager-openconnect] release: update NEWS file

[Lubomir Rintel <lkundrak src gnome org>]

commit f7c41a3727753179daf01d4af28dcbaefe4733ca
Author: Lubomir Rintel <lkundrak v3 sk>
Date:   Fri Mar 11 17:22:44 2022 +0100

    release: update NEWS file

 NEWS | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
---
diff --git a/NEWS b/NEWS
index cd56722..9c91400 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,19 @@
+==========================================================
+NetworkManager-openconnect-1.2.8
+Overview of changes since NetworkManager-openconnect-1.2.6
+==========================================================
+
+This is a new stable release of NetworkManager-openconnect.  Notable changes include:
+
+* Gtk4 version of the editor plugin is now available (for use with Control
+  Center of GNOME 42 or later).
+* Fix SNI and authgroup problems.
+* Handle IPv6 nameservers.
+* Allow IP prefixes of 0 for routing rules.
+* Update Brazilian Portuguese, Catalan, Chinese, Croatian, Czech, Danish,
+  Finnish, Hungarian, Indonesian, Lithuanian, Polish, Serbian, Slovak,
+  Slovenian, Spanish, Swedish, Turkish and Ukrainian translations.
+
 ==========================================================
 NetworkManager-openconnect-1.2.6
 Overview of changes since NetworkManager-openconnect-1.2.4