docs: update release notes for v1.0.40 (2025-05-21)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@zereight/mcp-gitlab",
-  "version": "1.0.39",
+  "version": "1.0.40",
   "description": "MCP server for using the GitLab API",
   "license": "MIT",
   "author": "zereight",

release-notes.md

@@ -1,6 +1,5 @@
-### Fixed
+### 1.0.40 (2025-05-21)
 
-- Added `expanded` property to `start` and `end` in `GitLabDiscussionNoteSchema`  
-  Now you can expand or collapse more information at the start and end of discussion notes.  
-  Example: In code review, you can choose to show or hide specific parts of the discussion.  
-  (See: [PR #40](https://github.com/zereight/gitlab-mcp/pull/40))
+- Added support for listing discussions (comments/notes) on GitLab issues.
+  - Example: You can now easily fetch all conversations (comments) attached to an issue via the API.
+  - Related PR: [#44](https://github.com/zereight/gitlab-mcp/pull/44)