chore(cdk-assets): mark as stable (#25319)

We've already been publishing with a stable version for a long time. A
recent change to the repo structure caused us to publish with alpha
versions, but let's just mark it as stable instead.

fixes #25143

Author: corymhall

packages/cdk-assets/README.md

@@ -3,18 +3,13 @@
 
 ---
 
-![cdk-constructs: Experimental](https://img.shields.io/badge/cdk--constructs-experimental-important.svg?style=for-the-badge)
-
-> The APIs of higher level constructs in this module are experimental and under active development.
-> They are subject to non-backward compatible changes or removal in any future version. These are
-> not subject to the [Semantic Versioning](https://semver.org/) model and breaking changes will be
-> announced in the release notes. This means that while you may use them, you may need to update
-> your source code when upgrading to a newer version of this package.
+![cdk-constructs: Stable](https://img.shields.io/badge/cdk--constructs-stable-success.svg?style=for-the-badge)
 
 ---
 
 <!--END STABILITY BANNER-->
 
+
 A tool for publishing CDK assets to AWS environments.
 
 ## Overview

packages/cdk-assets/package.json

@@ -74,8 +74,8 @@
       "rm"
     ]
   },
-  "stability": "experimental",
-  "maturity": "experimental",
+  "stability": "stable",
+  "maturity": "stable",
   "publishConfig": {
     "tag": "latest"
   }