Update log handling in playbooks and mock data for JSON compatibility

[devanshjainms]

Description

This pull request includes several changes to improve the handling and parsing of log messages in different tasks. The main focus is on converting filtered log messages from strings to JSON objects. The most important changes are summarized below:

Improvements to log message handling:

• src/roles/misc/tasks/post-validations-db.yml: Modified the filtered_logs to use default('[]') and from_json to ensure the logs are parsed as JSON objects.
• src/roles/misc/tasks/post-validations-scs.yml: Updated the filtered_logs to use default('[]') and from_json for consistent JSON parsing.
• src/roles/misc/tasks/rescue.yml: Changed the filtered_logs to use default('[]') and from_json to handle log messages as JSON objects.

Codebase updates:

• tests/roles/mock_data/log_parser.txt: Added import json to support JSON operations.
• tests/roles/mock_data/log_parser.txt: Modified the filtered_logs in the main function to use json.dumps for converting log entries to JSON format.

Checklist

• Code follows project style guidelines
• Documentation has been updated
• Tests are passing
• PR title follows conventional commit format
• Breaking changes are clearly marked

[dhruvmicrosoft]

lg!