Updated txid field response type in Retrieve all transactions by status API

The data.value.txid variable in the 200 OK response of the Retrieve all transactions by status API inaccurately returned the transaction sequenceId when calling the API request for a pending transaction. The txid field now returns an empty String value when the transaction status is pending.

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This update is considered a breaking change and requires using at least Liminal Express SDK v1.3.21.

Update Express API Version [v1.3.21] (Prod)

Updated the latest version of Liminal Express SDK to v1.3.21. Ensure to update the required impacted applications, including the Docker container image to /liminal-sdk-api:1.3.21.
Refer to the following latest versions of the Express Developer Postman collection:

Liminal Express Developer_1.3.21 (v1).postman_collection.json.
Liminal Express Developer_1.3.21 (v2).postman_collection.json.

Refer to the Update the Liminal Express guide to update to the latest version.