Update rubocop requirement from 1.63.5 to 1.64.1 (#953)

* Update rubocop requirement from 1.63.5 to 1.64.1

Updates the requirements on [rubocop](https://github.com/rubocop/rubocop) to permit the latest version.
- [Release notes](https://github.com/rubocop/rubocop/releases)
- [Changelog](https://github.com/rubocop/rubocop/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop@v1.63.5...v1.64.1)

---
updated-dependencies:
- dependency-name: rubocop
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

* Fix rubocop

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Samuel Ebeagu <samuel.ebeagu@toptal.com>

gemfiles/base.gemfile

@@ -6,7 +6,7 @@ gem 'redis', require: false
 gem 'rspec', '>= 3.7.0'
 gem 'rspec-collection_matchers'
 gem 'rspec-its'
-gem 'rubocop', '1.63.5'
+gem 'rubocop', '1.64.1'
 gem 'sqlite3', '~> 1.4'
 gem 'timecop'
 gem 'unparser'

lib/chewy/fields/root.rb

@@ -4,7 +4,7 @@ class Root < Chewy::Fields::Base
       attr_reader :dynamic_templates, :id
 
       def initialize(name, **options)
-        super(name, **options)
+        super
 
         @value ||= -> { self }
         @dynamic_templates = []

spec/chewy/fields/base_spec.rb

@@ -5,7 +5,7 @@
   specify { expect(described_class.new('name', type: 'integer').options[:type]).to eq('integer') }
 
   describe '#compose' do
-    let(:field) { described_class.new(:name, value: ->(o) { o.value }) }
+    let(:field) { described_class.new(:name, value: lambda(&:value)) }
 
     specify { expect(field.compose(double(value: 'hello'))).to eq(name: 'hello') }
     specify { expect(field.compose(double(value: %w[hello world]))).to eq(name: %w[hello world]) }
@@ -23,7 +23,7 @@
 
     context 'nested fields' do
       before do
-        field.children.push(described_class.new(:subname1, value: ->(o) { o.subvalue1 }))
+        field.children.push(described_class.new(:subname1, value: lambda(&:subvalue1)))
         field.children.push(described_class.new(:subname2, value: -> { subvalue2 }))
         field.children.push(described_class.new(:subname3))
       end

spec/chewy/index/observe/callback_spec.rb

@@ -21,7 +21,7 @@
     end
 
     context 'when executable is has arity 1' do
-      let(:executable) { ->(record) { record.population } }
+      let(:executable) { lambda(&:population) }
 
       it 'calls exectuable within context' do
         expect(callback.call(city)).to eq(city.population)