Update nx monorepo

Author: renovate[bot]

package.json

@@ -47,20 +47,20 @@
     "eslint-plugin-json": "4.0.1",
     "jest": "30.0.4",
     "jest-environment-jsdom": "30.0.4",
-    "nx": "16.7.4",
+    "nx": "21.3.0",
     "prettier": "3.6.2",
     "ts-jest": "29.4.0",
     "ts-node": "10.9.2",
     "tslib": "2.8.1",
     "typescript": "5.8.3",
-    "@nx/devkit": "16.7.4",
-    "@nx/workspace": "16.7.4",
-    "@nx/js": "16.7.4",
-    "@nx/linter": "16.7.4",
-    "@nx/eslint-plugin": "16.7.4",
-    "@nx/plugin": "16.7.4",
-    "@nx/jest": "16.7.4",
-    "@nx/node": "16.7.4"
+    "@nx/devkit": "21.3.0",
+    "@nx/workspace": "21.3.0",
+    "@nx/js": "21.3.0",
+    "@nx/linter": "19.8.4",
+    "@nx/eslint-plugin": "21.3.0",
+    "@nx/plugin": "21.3.0",
+    "@nx/jest": "21.3.0",
+    "@nx/node": "21.3.0"
   },
   "files": [
     "src/*",