Fix new RuboCop offenses (#398)

Author: tagliala

.github/workflows/ruby.yml

@@ -28,10 +28,6 @@ jobs:
             postgres-version: '12'
             channel: 'stable'
 
-          - ruby-version: '3.2'
-            gemfile: rails_edge
-            postgres-version: '16'
-            channel: 'experimental'
           - ruby-version: '3.3'
             gemfile: rails_edge
             postgres-version: '16'

lib/chrono_model/time_machine.rb

@@ -12,7 +12,7 @@ module TimeMachine
 
     included do
       if table_exists? && !chrono?
-        logger.warn <<-MSG.squish
+        logger.warn <<~MSG.squish
           ChronoModel: #{table_name} is not a temporal table.
           Please use `change_table :#{table_name}, temporal: true` in a migration.
         MSG

spec/spec_helper.rb

@@ -19,8 +19,6 @@
 require_relative 'support/matchers/table'
 require_relative 'support/aruba'
 
-puts "Testing against Active Record #{ActiveRecord::VERSION::STRING} with Arel #{Arel::VERSION}"
-
 # This file was generated by the `rspec --init` command. Conventionally, all
 # specs live under a `spec` directory, which RSpec adds to the `$LOAD_PATH`.
 # The generated `.rspec` file contains `--require spec_helper` which will cause

spec/support/connection.rb

@@ -56,7 +56,7 @@ def conf.to_s
       end
     end
   rescue Errno::ENOENT
-    warn <<-MSG.squish
+    warn <<~MSG.squish
       Please define your AR database configuration
       in spec/config.yml or reference your own configuration
       file using the TEST_CONFIG environment variable