Update dev-dependencies

Author: wooorm

package.json

@@ -38,12 +38,11 @@
   },
   "devDependencies": {
     "@types/node": "^20.0.0",
-    "c8": "^8.0.0",
+    "c8": "^9.0.0",
     "prettier": "^3.0.0",
     "remark-cli": "^11.0.0",
     "remark-preset-wooorm": "^9.0.0",
     "retext": "^9.0.0",
-    "rimraf": "^3.0.0",
     "type-coverage": "^2.0.0",
     "typescript": "^5.0.0",
     "xo": "^0.56.0"