refactor(update): isolate version comparison logic

[darbyjack]

This pull request refactors and improves the UpdateChecker class, making the update-checking process more robust, modular, and easier to maintain. The changes include improved error handling, code modularization, and enhanced logging for update checks.

Refactoring and modularization:

• Refactored the version comparison logic by extracting it into a new compareDecimalVersions static method, and similarly, moved the logic for reading the newest version from the JSON response into a new readNewestVersion method. This makes the code easier to read and maintain. [1] [2]

Error handling and robustness:

• Improved error handling in requestUpdateCheck() by checking HTTP response codes before attempting to parse the response, handling more specific exceptions, and ensuring the HTTP connection is always closed in a finally block.
• Enhanced logging in runCheck() to provide clearer warning messages when update checks fail, including logging exceptions if present.

Code quality improvements:

• Updated imports and minor documentation (e.g., typo fix from "preferrably" to "preferably") for better clarity and correctness. [1] [2]