Update Gemfile and CI configuration to support multiple Rails versions

[Syati]

No description provided.

[Copilot]

Pull Request Overview

This PR updates the gem to support multiple Rails versions by broadening version constraints and adding CI testing across Rails 7.2 and 8.0.

• Expanded dependency constraints in gemspec to support Rails 7.2-8.x
• Enhanced Gemfile to handle both explicit version constraints and legacy version formats
• Updated CI workflow to test against multiple Ruby/Rails version combinations

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
structured_params.gemspec	Broadened Rails dependency constraints from strict 8.0 to 7.2-8.x range
Gemfile	Added logic to handle different Rails version specification formats
.github/workflows/main.yml	Expanded CI matrix to test Ruby 3.2-3.4 against Rails 7.2 and 8.0

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