docs: Package Update Policy - Very Good Analysis Rules

[marcossevilla]

Overview

Define and document the package update policy for lint rules managed by very_good_analysis.

Scope

This policy should cover:

• How often the lint rules package and its dependencies are updated
• Who is responsible for initiating and reviewing updates
• How new Dart/Flutter lint rules are evaluated before being added
• How breaking lint rule changes are communicated and rolled out
• Whether updates are automated or manual

Tasks

• Document the update policy for very_good_analysis dependencies
• Define the process for evaluating and adopting new lint rules
• Establish a communication plan for breaking lint changes
• Add policy to CONTRIBUTING.md or a dedicated POLICY.md