Prepare 4.0.0 Release

We bumped the `@vitest/expect` dependency to a new major version.

While the major version bump of `@vitest/expect` seems to
come from `vite` itself and no significant changes of the interface
of `@vitest/expect` seem to have happened, we sill want to follow
semver.

And forcing a new major version to our library consumers is technically
a breaking change in my opinion.

Author: stschulte

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [4.0.0] - 2024-07-09
+
 ### Changed
 
 - Update `@vitest/expect` dependency to `2.0.1` (new major version)

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "aws-sdk-client-mock-vitest",
-  "version": "3.0.0",
+  "version": "4.0.0",
   "description": "Custom matchers for AWS SDK Client mock to be used in vitest",
   "type": "module",
   "module": "./dist/index.js",