Bump RuboCop to v1.45.x (#9305)

Merge pull request 9305

.rubocop.yml

@@ -447,6 +447,7 @@ Style/RescueModifier:
 Style/SafeNavigation:
   Exclude:
     - lib/jekyll/document.rb
+    - lib/jekyll/page.rb
 Style/SignalException:
   EnforcedStyle: only_raise
 Style/SingleArgumentDig:

Gemfile

@@ -23,7 +23,7 @@ group :test do
   gem "nokogiri", "~> 1.7"
   gem "rspec"
   gem "rspec-mocks"
-  gem "rubocop", "~> 1.38.0"
+  gem "rubocop", "~> 1.45.0"
   gem "rubocop-minitest"
   gem "rubocop-performance"
   gem "rubocop-rake"

lib/jekyll/static_file.rb

@@ -4,7 +4,9 @@ module Jekyll
   class StaticFile
     extend Forwardable
 
-    attr_reader :relative_path, :extname, :name
+    attr_reader :relative_path, :extname,
+                :type, # Returns the type of the collection if present, nil otherwise.
+                :name
 
     def_delegator :to_liquid, :to_json, :to_json
 
@@ -34,6 +36,7 @@ module Jekyll
       @collection = collection
       @relative_path = File.join(*[@dir, @name].compact)
       @extname = File.extname(@name)
+      @type = @collection&.label&.to_sym
     end
     # rubocop: enable Metrics/ParameterLists
 
@@ -171,11 +174,6 @@ module Jekyll
       end
     end
 
-    # Returns the type of the collection if present, nil otherwise.
-    def type
-      @type ||= @collection.nil? ? nil : @collection.label.to_sym
-    end
-
     # Returns the front matter defaults defined for the file's URL and/or type
     # as defined in _config.yml.
     def defaults