Bump restatedev/restate-cdk to version 0.7.0 to fix compilation problem

Author: tillrohrmann

kotlin/hello-world-lambda-cdk/package-lock.json

@@ -15,7 +15,7 @@
     "deploy": "npm run build && cdk deploy"
   },
   "devDependencies": {
-    "@restatedev/restate-cdk": "^0.4.1",
+    "@restatedev/restate-cdk": "^0.7.0",
     "@types/jest": "^29.5.8",
     "@types/node": "20.9.1",
     "aws-cdk": "2.113.0",