[8.7] Prepare changelog for 8.7 HFF (#2167)

* [8.7] Prepare changelog for 8.7 HFF

* Update CHANGELOG.next.md

CHANGELOG.next.md

@@ -16,8 +16,6 @@ Thanks, you're awesome :-) -->
 
 #### Added
 
-* adding `api` option to `event.category` #2147
-
 #### Improvements
 
 #### Deprecated
@@ -34,41 +32,31 @@ Thanks, you're awesome :-) -->
 
 #### Deprecated
 
-## 8.7.0 (Soft Feature Freeze)
+## 8.7.0 (Hard Feature Freeze)
 
 ### Schema Changes
 
-#### Breaking changes
-
 #### Bugfixes
 
 * remove duplicated `client.domain` definition #2120
 
 #### Added
 
 * adding `name` field to `threat.indicator` #2121
+* adding `api` option to `event.category` #2147
 * adding `library` option to `event.category` #2154
 
 #### Improvements
 
 * description for `host.name` definition updated to encourage use of FDQN #2122
 
-
 ### Tooling and Artifact Changes
 
 #### Improvements
 
 * Updated usage docs to include `threat.indicator.url.domain` and changed `indicator.marking.tlp` and `indicator.enrichments.marking.tlp` from "WHITE" to "CLEAR" to align with TLP 2.0. #2124
 * Bump `gitpython` from `3.1.27` to `3.1.30` in `/scripts`. #2139
 
-## 8.6.1
-
-### Schema Changes
-
-#### Bugfixes
-
-* Fixing `tlp_version` and `tlp` field for threat. #2156
-
 <!-- All empty sections:
 
 ## Unreleased