Add charon sepolia cluster to the CD workflow

[aly-obol]

🎯 Problem to be solved

We run a charon-sepolia cluster and we need to ensure its deployment is automated and managed with the canary workflows

🛠️ Proposed solution

Add the charon-sepolia-1780 cluster to the canary clusters CD workflow.

🧪 Tests

• [ ] Cluster pods are up and healthy (check with kubectl, and grafana dashboard)
• [ ] Has attested on a testnet at least once