chore(deps): update dependency nx to v21 (#978)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -52,7 +52,7 @@
     "fs-extra": "^11.3.0",
     "heading-case": "^0.1.6",
     "nano-staged": "^0.8.0",
-    "nx": "^20.8.1",
+    "nx": "^21.0.3",
     "prettier": "^3.5.3",
     "prettier-plugin-packagejson": "^2.5.12",
     "simple-git-hooks": "^2.13.0",