update changelog

docs/CHANGELOG.md

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 We follow the [Semantic Versioning 2.0.0](http://semver.org/) format.
 
 ## vx.x.x.x - 2024-06-05 - [PR#1185](https://github.com/NOAA-OWP/inundation-mapping/pull/1185)
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 This PR brings back the `preprocess_ahps_nws.py` code to FIM4 and generates new AHPS benchmark datasets for sites SXRA2 and SKLA2 in Alaska.  The new AHPS benchmark datasets are available on dev1 here: "/dev_fim_share/foss_fim/outputs/ali_ahps_alaska/AHPS_Results_Alaska/19020302/"
 
 This PR closes issue #1130. 
@@ -23,6 +24,9 @@ Note that for the "SKLA2" site, the downloaded ESRI-GDB grid files had a datum i
 ### Changes
 - `tools/tools_shared_functions.py`  ... updated for shapely v2
 
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 ## v4.5.3.1 - 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`.