Bump lefthook from 1.7.18 to 1.7.21 (#686)

Author: dependabot[bot]

package-lock.json

@@ -54,7 +54,7 @@
     "eslint-plugin-unicorn": "^56.0.0",
     "jest": "^29.7.0",
     "jest-extended": "^4.0.2",
-    "lefthook": "^1.7.18",
+    "lefthook": "^1.7.21",
     "markdownlint-cli": "^0.42.0",
     "prettier": "3.3.3",
     "ts-jest": "^29.2.5",