NEWS: updates for v1.6.1

Add release notes for libgpiod v1.6.1.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
diff --git a/NEWS b/NEWS
index d367ee8..baac204 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,10 @@
+libgpiod v1.6.1
+===============
+
+Bug fixes:
+- fix incorrect object size of gpiod.LineBulk in Python bindings
+- fix a crash in Line.request() when it's called without keyword arguments
+
 libgpiod v1.6
 =============