feat: add MR description with release changes

Release.gitlab-ci.yml

@@ -27,11 +27,13 @@ changelog:
     GIT_DEPTH: 0 # avoid shallow clone to give cliff all the info it needs
   script:
   - 'echo "Generating changelog"'
+  - 'git-cliff --bump --unreleased > CHANGES.md'
   - 'git-cliff --bump > CHANGELOG.md'
   - 'echo "Bumping version"'
   - 'git-cliff --bumped-version 2>/dev/null > VERSION'
   artifacts:
     paths:
+    - CHANGES.md
     - CHANGELOG.md
     - VERSION
   rules:
@@ -60,6 +62,7 @@ handle_mr:
     MR=$(echo "${MRS}" | jq ".[].iid")
     BRANCH=$(echo "${BRANCHES}" | jq ".[].name")
     TITLE="chore(release): prepare for $(cat VERSION)"
+    DESCRIPTION="$(cat CHANGES.md)"
     CONTENT="$(base64 -w0 <CHANGELOG.md)"
     BODY_TMPL='{"branch": "next-release", "start_branch": $startBranch, "author_name": "Unbound Release", "content": $content, "commit_message": $title, "encoding": "base64" }'
     if [ -n "${BRANCH}" ]; then
@@ -96,9 +99,10 @@ handle_mr:
         -H "Content-Type: application/json" \
         "https://gitlab.com/api/v4/projects/${CI_PROJECT_ID}/merge_requests/${MR}/rebase"
       echo "Updating title"
-      BODY_TMPL='{"target_branch":$target,"title":$title,"remove_source_branch":true,"squash":true}'
+      BODY_TMPL='{"target_branch":$target,"title":$title,"description":$description,"remove_source_branch":true,"squash":true}'
       BODY=$(jq --null-input -c \
               --arg title "${TITLE}" \
+              --arg description "${DESCRIPTION}" \
               --arg target "${CI_DEFAULT_BRANCH}" \
               "${BODY_TMPL}")
       curl -sf -X PUT \
@@ -108,9 +112,10 @@ handle_mr:
         "https://gitlab.com/api/v4/projects/${CI_PROJECT_ID}/merge_requests/${MR}"
     else
       echo "Creating new MR"
-      BODY_TMPL='{"source_branch":"next-release","target_branch":$target,"title":$title,"remove_source_branch":true,"squash":true}'
+      BODY_TMPL='{"source_branch":"next-release","target_branch":$target,"title":$title,"description":$description,"remove_source_branch":true,"squash":true}'
       BODY=$(jq --null-input -c \
               --arg title "${TITLE}" \
+              --arg description "${DESCRIPTION}" \
               --arg target "${CI_DEFAULT_BRANCH}" \
               "${BODY_TMPL}")
       curl -sf -X POST \