Update CHANGELOG.md

docs/CHANGELOG.md

@@ -1,6 +1,17 @@
 All notable changes to this project will be documented in this file.
 We follow the [Semantic Versioning 2.0.0](http://semver.org/) format.
 
+## v4.5.x.x - 2024-07-24 - [PR#1233](https://github.com/NOAA-OWP/inundation-mapping/pull/1233)
+
+In a PR [1217](https://github.com/NOAA-OWP/inundation-mapping/pull/1217), which is about to be merged, it updates a bunch of python packages. One is numpy. This has triggered a very large amount of on-screen output from a new numpy warning while running `synthesize_test_cases.py`.
+
+Must merge PR 1217 before this one.
+
+### Changes
+- `tools\overlapping_inundation.py`: As described
+
+ <br/><br/>
+
 
 ## v4.5.x.x - 2024-07-24 - [PR#1217](https://github.com/NOAA-OWP/inundation-mapping/pull/1217)