Update Style/RedundantFreeze rule for Ruby 3.0

In Ruby 3.0, Regexp and Range literals are frozen objects, and so we
don't need to freeze them.

app/helpers/embed_videos_helper.rb

@@ -1,6 +1,6 @@
 module EmbedVideosHelper
-  VIMEO_REGEX = /vimeo.*(staffpicks\/|channels\/|videos\/|video\/|\/)([^#\&\?]*).*/.freeze
-  YOUTUBE_REGEX = /youtu.*(be\/|v\/|u\/\w\/|embed\/|watch\?v=|\&v=)([^#\&\?]*).*/.freeze
+  VIMEO_REGEX = /vimeo.*(staffpicks\/|channels\/|videos\/|video\/|\/)([^#\&\?]*).*/
+  YOUTUBE_REGEX = /youtu.*(be\/|v\/|u\/\w\/|embed\/|watch\?v=|\&v=)([^#\&\?]*).*/
 
   def embedded_video_code(resource)
     link = resource.video_url

app/models/legislation/process.rb

@@ -24,7 +24,7 @@ class Legislation::Process < ApplicationRecord
   PHASES_AND_PUBLICATIONS = %i[homepage_phase draft_phase debate_phase allegations_phase
                                proposals_phase draft_publication result_publication].freeze
 
-  CSS_HEX_COLOR = /\A#?(?:[A-F0-9]{3}){1,2}\z/i.freeze
+  CSS_HEX_COLOR = /\A#?(?:[A-F0-9]{3}){1,2}\z/i
 
   has_many :draft_versions, -> { order(:id) },
     foreign_key: "legislation_process_id",

app/models/poll/question/answer/video.rb

@@ -1,8 +1,8 @@
 class Poll::Question::Answer::Video < ApplicationRecord
   belongs_to :answer, class_name: "Poll::Question::Answer"
 
-  VIMEO_REGEX = /vimeo.*(staffpicks\/|channels\/|videos\/|video\/|\/)([^#\&\?]*).*/.freeze
-  YOUTUBE_REGEX = /youtu.*(be\/|v\/|u\/\w\/|embed\/|watch\?v=|\&v=)([^#\&\?]*).*/.freeze
+  VIMEO_REGEX = /vimeo.*(staffpicks\/|channels\/|videos\/|video\/|\/)([^#\&\?]*).*/
+  YOUTUBE_REGEX = /youtu.*(be\/|v\/|u\/\w\/|embed\/|watch\?v=|\&v=)([^#\&\?]*).*/
 
   validates :title, presence: true
   validate :valid_url?

app/models/progress_bar.rb

@@ -1,6 +1,6 @@
 class ProgressBar < ApplicationRecord
   self.inheritance_column = nil
-  RANGE = (0..100).freeze
+  RANGE = (0..100)
 
   enum kind: %i[primary secondary]