fix: project/c4-serverless-app/backend/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-AXIOS-1038255

Author: snyk-bot

project/c4-serverless-app/backend/package.json

@@ -3,7 +3,7 @@
   "version": "1.0.0",
   "description": "Serverless TODO image app",
   "dependencies": {
-    "@types/axios": "^0.14.0",
+    "@types/axios": "^0.14.4",
     "@types/http-errors": "^1.6.1",
     "aws-xray-sdk": "^2.2.0",
     "axios": "^0.19.0",