Change cron trigger endpoint from POST to GET

[giancarloerra]

Summary

Change the cron trigger endpoint from POST to GET for compatibility with cron services.

Motivation

This change ensures compatibility with various cron services that require a GET request for triggering.

Changes

• Updated the endpoint method from POST to GET in the API.
• Modified documentation to reflect the change in the request method.

Testing

• npm run lint passes
• npm run typecheck passes
• npm test passes
• Verified manually in dev / built production mode

Breaking changes

• No breaking changes

Screenshots (if applicable)

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