chore: update aws-cdk-lib

- Bumps the `aws-cdk-lib` version from 2.30.0 to 2.31.0.

Author: kikuomax

package-lock.json

@@ -34,7 +34,7 @@
     "@microsoft/api-extractor": "^7.28.3",
     "@rollup/plugin-typescript": "^8.3.3",
     "@types/node": "10.17.27",
-    "aws-cdk-lib": "^2.30.0",
+    "aws-cdk-lib": "^2.31.0",
     "constructs": "^10.1.43",
     "rollup": "^2.75.7",
     "tslib": "^2.4.0",