fix(package): update @semantic-release/gitlab to version 6.0.0

Author: pvdlg

package.json

@@ -12,7 +12,7 @@
   ],
   "dependencies": {
     "@semantic-release/commit-analyzer": "^8.0.0",
-    "@semantic-release/gitlab": "^5.0.0",
+    "@semantic-release/gitlab": "^6.0.0",
     "@semantic-release/npm": "^6.0.0",
     "@semantic-release/release-notes-generator": "^9.0.0"
   },