[gobject-introspection] Release GObject Introspection 1.73.0

[Emmanuele Bassi <ebassi src gnome org>]

commit 0d34ea59edf0690d22fb067533165e7612071589
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Jul 13 17:54:33 2022 +0100

    Release GObject Introspection 1.73.0

 NEWS | 8 ++++++++
 1 file changed, 8 insertions(+)
---
diff --git a/NEWS b/NEWS
index d82fd938..a0885582 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,11 @@
+1.73.0 - 2022-07-13
+-------------------
+
+* Update the GIR data for GLib, GObject, GModule, and GIO
+* scanner: Support pre-processor macros with zero arguments [Philip Withnall]
+* scanner: Support ISO C varargs in macros [Philip Withnall]
+* Fix subproject build [Andoni Morales Alastruey]
+
 1.72.0 - 2022-03-18
 -------------------