Merge pull request #1947 from nestjs/renovate/cimg-node-21.x

chore(deps): update node.js to v21

Author: kamilmysliwiec

.circleci/config.yml

@@ -17,7 +17,7 @@ jobs:
   build:
     working_directory: ~/nest
     docker:
-      - image: cimg/node:20.9
+      - image: cimg/node:21.6
     steps:
       - checkout
       - run: