[Tests] replace aud with npm audit

Author: ljharb

package.json

@@ -19,7 +19,7 @@
 		"postlint": "tsc -p . && attw -P",
 		"tests-only": "nyc tape 'test/**/*.js'",
 		"test": "npm run tests-only",
-		"posttest": "aud --production",
+		"posttest": "npx npm@'>=10.2' audit --production",
 		"version": "auto-changelog && git add CHANGELOG.md",
 		"postversion": "auto-changelog && git add CHANGELOG.md && git commit --no-edit --amend && git tag -f \"v$(node -e \"console.log(require('./package.json').version)\")\""
 	},
@@ -76,7 +76,6 @@
 		"@types/make-generator-function": "^2.0.3",
 		"@types/object-inspect": "^1.8.4",
 		"@types/tape": "^5.6.4",
-		"aud": "^2.0.4",
 		"auto-changelog": "^2.4.0",
 		"eslint": "=8.8.0",
 		"evalmd": "^0.0.19",