Add returns to fetch-develop-deps
Add returns to fetch-develop-deps

These look necessary for https://github.com/vector-im/riot-web/pull/8225
to work - the build is failing on jenkins

vector-im/riot-web,vector-im/vector-web,vector-im/riot-web,vector-im/vector-web,vector-im/riot-web,vector-im/riot-web,vector-im/riot-web,vector-im/riot-web,vector-im/vector-web,vector-im/vector-web,vector-im/vector-web