feat: Update dependencies and improve Updater class structure

Summary of changes
- Added `prettier` as a devDependency in both `package.json` and `package-lock.json` to maintain code formatting standards.
- Reorganized import statements in `updater.mjs` for better readability and consistency.
- Enhanced the Updater class methods by refining spaces and indentation for improved code clarity.
- Introduced a new helper function `parseIntArray` for parsing integer arrays, cleaning up `retrieveAndSetValue` function.

Changes
- Updated `package.json` and `package-lock.json` to include the latest version of `prettier`.
- Reformatted multiple sections in `updater.mjs` to adhere to a consistent style, making future edits easier and reducing visual clutter.
- Improved logic readability in `retrieveAndSetValue` by delegating array parsing to the new `parseIntArray` function.