[gssdp] Prepare GSSDP 1.5.1

[Jens Georg <jensgeorg src gnome org>]

commit 22f2bb1cf8ff32a20144b1cbfc8ee521b1ac5a57
Author: Jens Georg <mail jensge org>
Date:   Fri Jun 3 20:05:59 2022 +0200

    Prepare GSSDP 1.5.1

 NEWS | 12 ++++++++++++
 1 file changed, 12 insertions(+)
---
diff --git a/NEWS b/NEWS
index 4916d1d..dcb36e5 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,15 @@
+1.5.1 (unstable)
+================
+ - Clean-up debug output
+ - Allow interface indexes up to MAXINT
+
+Bugs fixed in this release:
+ - Hopefully this should fix https://gitlab.gnome.org/GNOME/gupnp-igd/-/jobs/2021422
+
+All contributors to this release:
+ - Jens Georg <mail jensge org>
+ - Olivier Crête <olivier crete collabora com>
+
 1.5.0 (unstable)
 ================
  - Switch to libsoup3