fix: regenerate pubspec.lock file to remove duplicate mapping key

[mdmohsin7]

Description

Flutter pub get was failing due to multiple watcher mapping keys in pubspec.lock file.

Fixes #305

Type of change

Please delete options that are not relevant.

• [x] Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Running flutter pub get and then building the app

Please include screenshots below if applicable.

Checklist:

• [x] My code follows the style guidelines of this project
• [x] I have performed a self-review of my own code
• [x] My changes generate no new warnings
• [x] New and existing unit tests pass locally with my changes
• [x] Any dependent changes have been merged and published in downstream modules
• [x] I have checked my code and corrected any misspellings

Maintainer Checklist

• [ ] closes #xxxx (Replace xxxx with the GitHub issue number)
• [ ] Tag the PR with the appropriate labels