fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-ANSIREGEX-1583908
- https://snyk.io/vuln/SNYK-JS-INFLIGHT-6095116
- https://snyk.io/vuln/SNYK-JS-UNSETVALUE-2400660

package.json

@@ -38,7 +38,7 @@
   "dependencies": {
     "@uswds/compile": "^1.1.0",
     "@uswds/uswds": "3.7.1",
-    "gulp": "^4.0.2",
+    "gulp": "^5.0.0",
     "gulp-sass": "^5.1.0",
     "path": "^0.12.7",
     "postcss": "^8.4.32",