Update GitLab CI to save changelog to CHANGELOG file

.gitlab-ci.yml

@@ -4,10 +4,9 @@ stages:
 create_release:
   stage: release
   image: registry.gitlab.com/gitlab-org/release-cli:latest
-  only:
-    - tags
   rules:
     - if: $CI_COMMIT_TAG =~ /^[0-9]+\.[0-9]+\.[0-9]+.*$/
+    - when: never
   script:
     - |
       # Get the previous tag to generate changelog
@@ -21,9 +20,9 @@ create_release:
       fi
 
       # Save changelog to file for release
-      echo -e "## Changes\n$CHANGELOG" > changelog.md
+      echo -e "## Changes\n$CHANGELOG" > CHANGELOG
   release:
     name: 'Release $CI_COMMIT_TAG'
     tag_name: '$CI_COMMIT_TAG'
-    description: './changelog.md'
+    description: './CHANGELOG'
     ref: '$CI_COMMIT_TAG'