Handle exceptions raised by `create!` in `create_webhook_record` method

[coderabbitai]

Description

The create! method in the create_webhook_record method of the InboundWebhooks::GithubController is used to create a new InboundWebhook record. However, since create! can raise exceptions, it is important to implement error handling to manage these exceptions gracefully, especially in a production environment.

Context

• PR: #26
• Comment: #discussion_r1745846265

Suggested Solution

Implement error handling around the create! method to ensure that any exceptions are caught and managed appropriately.