chore: Prepare CHANGELOG.md for 1.2.0 release

CHANGELOG.md

@@ -15,23 +15,22 @@ Types of changes:
 
 ## Unreleased
 
-## [1.1.1] - 2023-11-27
-
-### Fixed
-
-- Remove match pattern from field `replyChannel.elster.accountId` (planning#1326)
-
-## [1.2.0-rc1] - 2023-08-24
+## [1.2.0] - 2024-01-05
 ### Changed
-- Clarified that UUIDs for attachments are globally unique. (planning#1134, 524ca8b)
+- Clarified that UUIDs for attachments are globally unique. (see [planning#1134](https://git.fitko.de/fit-connect/planning/-/issues/1134), 524ca8b)
 
-## [1.2.0-rc0] - 2023-08-23
 ### Added
 
 - Add `replyChannels` attribute. Using this attribute, an Onlineservice (Sender) can tell the Fachverfahren (Subscriber)
   which `replyChannels` it supports. Must be a subset of the `replyChannels` of the services a Fachverfahren offers.
   The JWK contained in the `encryptionPublicKey` attribute will be used by the Fachverfahren to encrypt the Reply. (2131a8ba)
 
+## [1.1.1] - 2023-11-27
+
+### Fixed
+
+- Remove match pattern from field `replyChannel.elster.accountId` ([planning#1326](https://git.fitko.de/fit-connect/planning/-/issues/1326))
+
 ## [1.1.0] - 2023-04-20
 
 ### Changed