Bump @atlaskit/editor-markdown-transformer from 5.5.1 to 5.6.0

Bumps [@atlaskit/editor-markdown-transformer](https://bitbucket.org/atlassian/atlassian-frontend-mirror) from 5.5.1 to 5.6.0.
- [Commits](https://bitbucket.org/atlassian/atlassian-frontend-mirror/commits)

---
updated-dependencies:
- dependency-name: "@atlaskit/editor-markdown-transformer"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -1,7 +1,7 @@
 {
   "dependencies": {
     "@atlaskit/editor-json-transformer": "^8.11.1",
-    "@atlaskit/editor-markdown-transformer": "^5.5.1",
+    "@atlaskit/editor-markdown-transformer": "^5.6.0",
     "@atlaskit/editor-wikimarkup-transformer": "^11.3.0",
     "esbuild": "^0.20.2"
   },