Change ruby to .ruby-version in Gemfile

Author: rossta

Gemfile

@@ -1,7 +1,7 @@
 source "https://rubygems.org"
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-ruby "3.3.0"
+ruby file: ".ruby-version"
 
 gem "rails", "~> 7.1", group: [:default, :wasm] # Bundle edge Rails instead: gem "rails", github: "rails/rails", branch: "main"