chore(deps): update dependency npm-check-updates to v21

Author: ffurrer2-renovate[bot]

package-lock.json

@@ -52,7 +52,7 @@
     "eslint-plugin-prettier": "5.5.5",
     "jest": "30.3.0",
     "make-coverage-badge": "1.2.0",
-    "npm-check-updates": "20.0.1",
+    "npm-check-updates": "21.0.2",
     "prettier": "3.8.2",
     "prettier-eslint": "16.4.2",
     "rollup": "4.60.1"