ci: update prepare_release to use git-cliff for CHANGELOG generation

.gitlab-ci.yml

@@ -21,15 +21,18 @@ build:
   - push
 
 prepare_release:
-  image: node:20
   stage: prepare
-  before_script:
-  - npm install -g conventional-changelog-cli
+  image:
+    name: orhunp/git-cliff:latest
+    entrypoint: [ "" ]
+  variables:
+    GIT_STRATEGY: clone # clone entire repo instead of reusing workspace
+    GIT_DEPTH: 0 # avoid shallow clone to give cliff all the info it needs
   script:
-  - conventional-changelog -p conventionalcommits > ./release.description
+  - git-cliff --current > CHANGELOG.md
   artifacts:
     paths:
-    - release.description
+    - CHANGELOG.md
   rules:
   - if: $CI_COMMIT_TAG
 
@@ -43,6 +46,6 @@ release:
   - echo "Running release_job for $TAG"
   release:
     tag_name: '$CI_COMMIT_TAG'
-    description: ./release.description
+    description: ./CHANGELOG.md
   rules:
   - if: $CI_COMMIT_TAG