Support new Wazuh version 4.8.1 in wazuh-packages repository

[davidjiglesias]

Description

This issue attempts to support a new version 4.8.1 in the wazuh-packages repository.

Tasks

• Bump 4.8.1 branch to 4.8.1 version on wazuh-packages repository, including revision and changelog.
  • Bump version to 4.8.1 #2982
• Build and push testing images for GitHub actions. (No necessary if it is a patch version)
• Build ECR and create ECS tasks definition if needed.