chore(deps): update constructs requirement in /examples/servers/zen (#1359)

Updates the requirements on [constructs](https://github.com/aws/constructs) to permit the latest version.
- [Release notes](https://github.com/aws/constructs/releases)
- [Commits](aws/constructs@v10.0.0...v10.6.0)

---
updated-dependencies:
- dependency-name: constructs
  dependency-version: 10.6.0
  dependency-type: direct:production
...

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Author: dependabot[bot]

examples/servers/zen/requirements.txt

@@ -1,3 +1,3 @@
 aws-cdk-lib==2.252.0
-constructs>=10.0.0,<11.0.0
+constructs>=10.6.0,<11.0.0
 cdk-nag==2.38.2