Update CHANGELOG-EE.md for 12.1.4-ee

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CHANGELOG-EE.md

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+## 12.1.4
+
+### Fixed (3 changes)
+
+- Don't send CI usage email notifications when quota is unlimited. !14810
+- Fix variable mismatch in code quality widget. !14829
+- Change package validation scope to fix Maven package naming functionality. !14922
+
+
 ## 12.1.3
 ### Fixed (3 changes)

ee/changelogs/unreleased/13175-400-bad-request-when-deploying-a-maven-package.yml

----
-title: Change package validation scope to fix Maven package naming functionality
-merge_request: 14922
-author:
-type: fixed

ee/changelogs/unreleased/mfluharty-code-quality-worker-variable-mismatch.yml

----
-title: Fix variable mismatch in code quality widget
-merge_request: 14829
-author:
-type: fixed

ee/changelogs/unreleased/rd-do-not-send-ci-quota-notifications-when-quota-is-unlimited.yml

----
-title: Don't send CI usage email notifications when quota is unlimited
-merge_request: 14810
-author:
-type: fixed