Updates elasticsearch-model rake task, fixes dependencies

Author: picandocodigo

elasticsearch-model/Rakefile

@@ -46,7 +46,7 @@ end
 require 'rake/testtask'
 namespace :test do
   desc 'Run all tests. Optionally define env variable RAILS_VERSIONS. E.g. RAILS_VERSIONS=3.0,5.0'
-  task :all, [:rails_versions] do |task, args|
+  task :all do |task, args|
     gemfiles = ENV['RAILS_VERSIONS'] ? ENV['RAILS_VERSIONS'].split(',').map { |v| "#{v}.gemfile" } : GEMFILES
     puts '-' * 80
     gemfiles.each do |gemfile|

elasticsearch-model/gemfiles/7.0.gemfile

@@ -24,8 +24,8 @@ source 'https://rubygems.org'
 
 gemspec path: '../'
 
-gem 'activemodel',  '7'
-gem 'activerecord', '7'
+gem 'activemodel',  '~> 7'
+gem 'activerecord', '~> 7'
 gem 'sqlite3' unless defined?(JRUBY_VERSION)
 # gem 'mongoid', '~> 6'