updated changelog

CHANGELOG.md

@@ -7,6 +7,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
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 * Bug Fix
   * Fixed a bug for identifying clean warnings to test
+  * Imposed minimum frequency of `1D` on `Instrument.bounds` to enable data loading for instruments with inter-file time intervals of less than one day
 * Maintenance
   * Update usage of `dims` to be consistent with future versions of `xarray`
   * Update frequency strings for `pandas`
@@ -15,8 +16,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
   * Drop testing for python 3.9 following NEP29.
   * Update useage of `step.delta` to `pds.Timedelta(step)`
   * Update pip rc install workflow to test against multiple python versions
-* Bug Fix
-  * Imposed minimum frequency of `1D` on `Instrument.bounds` to enable data loading for instruments with inter-file time intervals of less than one day
+  * Updated deprecated useage of `step.delta` to `pds.Timedelta(step)`
 
 [3.2.0] - 2024-03-27
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