Migrate Husky to v9

Per https://github.com/typicode/husky/releases/tag/v9.0.1

Signed-off-by: Roger Sheen <[email protected]>

.husky/pre-commit

@@ -1,4 +1 @@
-#!/bin/sh
-. "$(dirname "$0")/_/husky.sh"
-
 npx lint-staged

package.json

@@ -13,7 +13,7 @@
     "fmt": "npm run format",
     "format": "prettier --write \"**/*.{css,dita*,json,md,scss,xml,yaml,yml}\"",
     "lint-staged": "lint-staged --no-stash",
-    "prepare": "husky install",
+    "prepare": "husky",
     "prettier": "prettier --write \"**/*.{css,dita*,json,md,scss,xml,yaml,yml}\"",
     "prettier-check": "prettier --check \"**/*.{css,dita*,json,md,scss,xml,yaml,yml}\"",
     "stylelint": "stylelint \"**/*.css\"",