Update outdated dependencies in yaml file

[V-inaya-K]

Description

The project currently contains several outdated dependencies, as identified using flutter pub outdated.

Observations

• Multiple packages have newer compatible versions available
• Some dependencies are significantly outdated compared to their latest versions
• A few packages are marked as discontinued (e.g., js, build_runner_core)

Proposed Approach

• Update safe dependencies (UI and utility packages) to their latest compatible versions
• Investigate and replace deprecated/discontinued packages
• Handle major version upgrades (e.g., Firebase-related packages) in separate PRs to avoid breaking changes

Why this is important

• Improves maintainability
• Reduces technical debt
• Ensures compatibility with newer Flutter/Dart versions

I would like to work on this issue.