chore(deps): update node.js

Author: renovate[bot]

.github/workflows/build.yml

@@ -13,7 +13,7 @@ jobs:
       - name: Use Node.js
         uses: actions/setup-node@v2
         with:
-          node-version: '14.x'
+          node-version: '14.21.3'
       - run: yarn
       - run: yarn run prettier-check
       - run: yarn run eslint

package.json

@@ -3,7 +3,7 @@
   "version": "0.0.0-DEVELOPMENT",
   "description": "CLI to bootstrap Sourcegraph npm packages",
   "engines": {
-    "node": "^14.0.0"
+    "node": "^14.21.3"
   },
   "repository": {
     "type": "git",