Add change log entry for name schema change

changelog.d/20231120_144022_jsick_DM_41781.md

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+### Backwards-incompatible changes
+
+- New structure for the `PersonName` model (used for the name key in  `[[technote.authors]]`):
+
+  - Delete the `name` key to require structured names
+  - Rename the `given_names` and `family_names` keys to `given` and `family`, respectively, which works better in context.
+
+### New features
+
+- Add a new `organization` key to the `[technote]` table to capture information about the organization publishing the technote series.