Update CHANGELOG-EE.md for 13.7.1-ee

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CHANGELOG-EE.md

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+## 13.7.1 (2020-12-23)
+
+### Fixed (3 changes)
+
+- Fix DAST profiles deletion. !50271
+- Geo: Fix LFS for location-aware Git URL. !50415
+- Fix StoreReportService related to autofix. !50490
+
+
 ## 13.7.0 (2020-12-22)
 ### Removed (1 change)

ee/changelogs/unreleased/294242-fix-dast-profiles-deletion.yml

----
-title: Fix DAST profiles deletion
-merge_request: 50271
-author:
-type: fixed

ee/changelogs/unreleased/bug-store-report-service-fix.yml

----
-title: Fix StoreReportService related to autofix
-merge_request: 50490
-author:
-type: fixed

ee/changelogs/unreleased/mk-fix-lfs-with-single-git-url.yml

----
-title: 'Geo: Fix LFS for location-aware Git URL'
-merge_request: 50415
-author:
-type: fixed