Update CHANGELOG.md for 11.7.3

[ci skip]

CHANGELOG.md

@@ -2,6 +2,10 @@
 documentation](doc/development/changelog.md) for instructions on adding your own
 entry.
+## 11.7.3 (2019-01-30)
+
+- No changes.
+
 ## 11.7.2 (2019-01-29)
 ### Security (24 changes)