[librsvg: 2/5] Update NEWS

[Marge Bot <marge-bot src gnome org>]

commit b75bda724203e819265dccb713035861ad73c1ed
Author: Federico Mena Quintero <federico gnome org>
Date:   Fri Nov 12 20:31:52 2021 -0600

    Update NEWS
    
    Part-of: <https://gitlab.gnome.org/GNOME/librsvg/-/merge_requests/633>

 NEWS | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
---
diff --git a/NEWS b/NEWS
index 27764311b..c8da12098 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,28 @@
+==============
+Version 2.52.4
+==============
+
+New features:
+
+- #816 - Support the isolation property from the Compositing and
+  Blending Level 1 specification.
+
+- Support Visual Studio 2022 (Chun-wei Fan).
+
+Fixes:
+
+- #818 - The opacity and mix-blend-mode properties were not being
+  applied when an element has a mask.
+
+- Fix panic when an empty group has a pattern fill and filters.
+
+- Fix the tests on Windows; the still only work when Fontconfig is
+  present (Chun-wei Fan).
+
+- Work around a bug in the cairo-rs bindings in the test suite, that
+  only manifests itself in s/390x due to its calling convention.  See
+  https://github.com/gtk-rs/gtk-rs-core/issues/335
+
 ==============
 Version 2.52.3
 ==============