chore: change ceramic endpoint

[pseudobun]

Changes:

• [x] Utilize the Ceramic testnet in tests to prevent unnecessary strain on the mainnet.
• [x] Transition to our dedicated Ceramic mainnet node endpoint.

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: ed4bd8bb4bfe6150167269ac74f6b5bc1cf9207b

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

| Name | Type | | ------------------------ | ----- | | @blockchain-lab-um/masca | Patch |

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