🐛 Update cloudflared version in examples

[maximveksler]

Describe the bug

The version in the example provided for deploying cloudflared on k8s is cloudflare/cloudflared:2021.5.10 while the latest released version at time of writing is 2025.2.1 this represents a 4 year gap which is against Cloudlare's stated policy of 1 year support rendering the example stale and possibly non usable.

Expected behavior Please review the examples and update the versioning used, or build an automated process to push version updates into example code.