Update changelog

CHANGELOG.md

@@ -1,6 +1,6 @@
 # Changelog
 
-## [«unknown»](https://github.com/NASA-PDS/pds4-information-model/tree/«unknown») (2024-12-18)
+## [«unknown»](https://github.com/NASA-PDS/pds4-information-model/tree/«unknown») (2025-01-06)
 
 [Full Changelog](https://github.com/NASA-PDS/pds4-information-model/compare/v15.2.3...«unknown»)
 
@@ -11,6 +11,7 @@
 
 **Defects:**
 
+- Issue trying to generate schemas 1E00 and 1D00 [\#852](https://github.com/NASA-PDS/pds4-information-model/issues/852) [[s.high](https://github.com/NASA-PDS/pds4-information-model/labels/s.high)]
 - lddtool -h returns expected information twice and then error messages  [\#849](https://github.com/NASA-PDS/pds4-information-model/issues/849) [[s.medium](https://github.com/NASA-PDS/pds4-information-model/labels/s.medium)]
 - lddtool -v creates/overwrites output directory and files [\#848](https://github.com/NASA-PDS/pds4-information-model/issues/848) [[s.medium](https://github.com/NASA-PDS/pds4-information-model/labels/s.medium)]
 - Download links broken for lddtool for online documentation  [\#846](https://github.com/NASA-PDS/pds4-information-model/issues/846) [[s.medium](https://github.com/NASA-PDS/pds4-information-model/labels/s.medium)]