chore(deps): update node.js to v22.21.0 (#4349)

Co-authored-by: homarr-renovate[bot] <158783068+homarr-renovate[bot]@users.noreply.github.com>

.nvmrc

@@ -1 +1 @@
-22.20.0
+22.21.0

package.json

@@ -60,7 +60,7 @@
   },
   "packageManager": "pnpm@10.18.3",
   "engines": {
-    "node": ">=22.20.0"
+    "node": ">=22.21.0"
   },
   "pnpm": {
     "onlyBuiltDependencies": [