fix: packages/service/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-BRACES-6838727
- https://snyk.io/vuln/SNYK-JS-MICROMATCH-6838728

packages/service/package.json

@@ -37,10 +37,10 @@
     "chai": "^4.3.6",
     "copy-webpack-plugin": "^10.2.4",
     "cross-env": "^7.0.3",
-    "gulp": "^4.0.2",
+    "gulp": "^5.0.0",
     "mocha-junit-reporter": "^2.0.2",
     "proxyquire": "^2.1.3",
-    "serverless": "^2.72.3",
+    "serverless": "^3.0.0",
     "serverless-domain-manager": "^6.0.3",
     "serverless-dynamodb-local": "^0.2.40",
     "serverless-offline": "^8.7.0",