Update morph testnet

[JayJay1024]

PR-Codex overview

This PR focuses on updating the MORPH value in the type definitions, upgrading the version of @helixbridge/helixconf, and changing the RPC URLs in the morph.ts configuration.

Detailed summary

• Updated MORPH value from 2710 to 2810 in chain.ts.
• Upgraded @helixbridge/helixconf from 1.1.14 to 1.1.15 in package.json and pnpm-lock.yaml.
• Changed RPC URLs from rpc-testnet.morphl2.io to rpc-holesky.morphl2.io in morph.ts.
• Updated block explorer URL to https://explorer-holesky.morphl2.io/.

✨ Ask PR-Codex anything about this PR by commenting with /codex {your question}

[changeset-bot]

⚠️ No Changeset found

Latest commit: 2b9075b

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[github-actions]

---
Commit: 2b9075b
Preview: https://helix-apps-1u7nkhx2z-itering.vercel.app https://helix-dev-mainnet.vercel.app

---
Commit: 2b9075b
Preview: https://helix-apps-test-fwvnr7tv3-itering.vercel.app https://helix-dev-testnet.vercel.app