Update rails requirement from ~> 7.1.3, >= 7.1.3.2 to ~> 8.1.1

Updates the requirements on [rails](https://github.com/rails/rails) to permit the latest version.

Updates `rails` to 8.1.1
- [Release notes](https://github.com/rails/rails/releases)
- [Commits](rails/rails@v7.1.3.2...v8.1.1)

---
updated-dependencies:
- dependency-name: rails
  dependency-version: 8.1.1
  dependency-type: direct:production
  dependency-group: rails
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Gemfile

@@ -3,7 +3,7 @@ source 'https://rubygems.org'
 ruby '3.4.1'
 
 # Bundle edge Rails instead: gem "rails", github: "rails/rails", branch: "main"
-gem 'rails', '~> 7.1.3', '>= 7.1.3.2'
+gem 'rails', '~> 8.1.1'
 
 # The original asset pipeline for Rails [https://github.com/rails/sprockets-rails]
 gem 'sprockets-rails'