fix: spec/fixtures/dynamic_finders/plugin_version/map-for-acf/compose…

…r_file/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-ASYNC-7414156

spec/fixtures/dynamic_finders/plugin_version/map-for-acf/composer_file/package.json

@@ -7,7 +7,7 @@
   "license": "ISC",
   "dependencies": {
     "gulp": "^3.9.1",
-    "gulp-uglify": "^1.5.4",
+    "gulp-uglify": "^2.1.0",
     "gulp-rename": "^1.2.2",
     "gulp-sourcemaps": "~1.6.0"
   }