Replaced stream queue

package.json

@@ -30,6 +30,7 @@
     "chart.js": "^4.4.3",
     "govuk_frontend_toolkit": "^9.0.1",
     "govuk-frontend": "2.13.0",
+    "gulp-merge": "^0.1.1",
     "hogan": "1.0.2",
     "jquery": "3.7.1",
     "morphdom": "^2.7.4",
@@ -37,7 +38,6 @@
     "query-command-supported": "1.0.0",
     "sass-embedded": "^1.77.8",
     "socket.io-client": "^4.2.0",
-    "streamqueue": "^1.1.2",
     "textarea-caret": "3.1.0",
     "timeago": "1.6.7"
   },
@@ -51,7 +51,7 @@
     "gulp-babel": "8.0.0",
     "gulp-better-rollup": "4.0.1",
     "gulp-clean-css": "4.3.0",
-    "gulp-concat": "2.6.1",
+    "gulp-concat": "^2.6.1",
     "gulp-include": "2.4.1",
     "gulp-jshint": "2.1.0",
     "gulp-prettyerror": "2.0.0",