build(deps): bump @azure/identity from 4.0.1 to 4.2.1

Bumps [@azure/identity](https://github.com/Azure/azure-sdk-for-js) from 4.0.1 to 4.2.1.
- [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/identity_4.0.1...@azure/identity_4.2.1)

---
updated-dependencies:
- dependency-name: "@azure/identity"
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -29,7 +29,7 @@
     "@azure/arm-resources": "5.2.0",
     "@azure/arm-storage": "18.2.0",
     "@azure/functions": "^3.5.1",
-    "@azure/identity": "4.0.1",
+    "@azure/identity": "4.2.1",
     "@azure/storage-blob": "12.17.0",
     "@fingerprintjs/fingerprintjs-pro": "^3.9.2",
     "cockatiel": "3.1.2",