[Tests] use npm audit instead of aud

Author: ljharb

package.json

@@ -37,7 +37,6 @@
         "@browserify/envify": "^6.0.0",
         "@browserify/uglifyify": "^6.0.0",
         "@ljharb/eslint-config": "^21.1.1",
-        "aud": "^2.0.4",
         "browserify": "^16.5.2",
         "bundle-collapser": "^1.4.0",
         "common-shakeify": "~1.0.0",
@@ -72,7 +71,7 @@
         "pretest": "npm run --silent readme && npm run --silent lint",
         "test": "npm run tests-only",
         "tests-only": "nyc tape 'test/**/*.js'",
-        "posttest": "aud --production",
+        "posttest": "npx npm@'>=10.2' audit --production",
         "readme": "evalmd README.md",
         "postlint": "eclint check $(git ls-files | xargs find 2> /dev/null | grep -vE 'node_modules|\\.git' | grep -v dist/)",
         "lint": "eslint --ext=js,mjs .",