Bump @azure/cosmos from 4.7.0 to 4.8.0 (#783)

Bumps [@azure/cosmos](https://github.com/Azure/azure-sdk-for-js) from 4.7.0 to 4.8.0.
- [Release notes](https://github.com/Azure/azure-sdk-for-js/releases)
- [Changelog](https://github.com/Azure/azure-sdk-for-js/blob/main/documentation/Changelog-for-next-generation.md)
- [Commits](https://github.com/Azure/azure-sdk-for-js/compare/@azure/cosmos_4.7.0...@azure/cosmos_4.8.0)

---
updated-dependencies:
- dependency-name: "@azure/cosmos"
  dependency-version: 4.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -16,7 +16,7 @@
   "main": "dist/index.js",
   "types": "dist/src/index.d.ts",
   "dependencies": {
-    "@azure/cosmos": "^4.7.0",
+    "@azure/cosmos": "^4.8.0",
     "@microsoft/agents-hosting": "file:../../packages/agents-hosting"
   },
   "license": "MIT",