Bump lefthook from 2.1.6 to 2.1.9 (#312)

Author: jason-fox

package-lock.json

@@ -42,7 +42,7 @@
     "bootstrap": "^5.3.8",
     "bootstrap-icons": "^1.13.1",
     "bootswatch": "^5.3.8",
-    "lefthook": "^2.1.6",
+    "lefthook": "^2.1.9",
     "prettier": "3.8.3",
     "stylelint": "^16.25.0",
     "stylelint-config-twbs-bootstrap": "^16.1.0"