Upgrade App to Rails 7.2 and dual boot Rails 8.0

[etagwerker]

Hi there,

Here are the changes in this PR:

• Update Rails from 7.1 to 7.2 as current version
• Set up dual-boot targeting Rails 8.0 (all 204 tests pass on both)
• Update load_defaults from 7.1 to 7.2
• Update rspec-rails ~> 6.1 (fixture_paths support)
• Update database_cleaner-active_record to 2.2.2 (Rails 7.2 compat)
• Fix show_exceptions: false → :none in test.rb
• Fix fixture_path → fixture_paths in rails_helper.rb
• Remove config.read_encrypted_secrets from production.rb
• Opt in to Rails 8.1 to_time_preserves_timezone = :zone

Jira Ticket

N/A

Motivation / Context

Testing Claude Code Upgrade Skill by FastRuby.io + OmbuLabs.ai

QA / Testing Instructions

Staging should work.

Test suite should pass for both Rails versions

Screenshots:

N/A

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✅ I will abide by the code of conduct.

[Copilot]

Pull request overview

Upgrades the application’s primary Rails version to 7.2 while maintaining a dual-boot setup for Rails 8.0, along with supporting configuration and dependency updates needed for compatibility.

Changes:

• Bump Rails defaults/configuration to 7.2 and adjust environment settings for Rails 7.2 behavior.
• Update test/support configuration to match newer rails/rspec-rails APIs (fixtures, exception handling).
• Refresh dependencies and lockfiles for Rails 7.2 (main) and Rails 8.0 (next/dual-boot).

Reviewed changes

Copilot reviewed 5 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
spec/rails_helper.rb	Updates fixtures configuration to fixture_paths for newer rspec-rails compatibility.
config/environments/test.rb	Updates exception handling setting to Rails 7.2-supported value (:none).
config/environments/production.rb	Removes deprecated encrypted secrets loading config and clarifies secret key base sourcing.
config/application.rb	Advances load_defaults to 7.2 and opts into to_time timezone preservation behavior.
Gemfile	Sets Rails 7.2 as default and Rails 8.0 under dual-boot; bumps rspec-rails requirement.
Gemfile.lock	Updates resolved dependencies for Rails 7.2 and related gems.
Gemfile.next.lock	Updates resolved dependencies for Rails 8.0 dual-boot bundle.

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