feat(backend): update wallet address additional properties

[BlairCurrey]

Changes proposed in this pull request

• Updates walletAddressUpdate mutation so that additionalProperties can be updated

Context

fixes https://github.com/interledger/rafiki/issues/2740

Checklist

• [X] Related issues linked using fixes #number
• [X] Tests added/updated
• [ ] Documentation added
• [ ] Make sure that all checks pass
• [ ] Bruno collection updated

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