fix: Gemfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-RUBY-REXML-7462086

Gemfile

@@ -49,7 +49,7 @@ gem 'aws-sdk-s3', require: false
 # original gem isn't maintained actively
 # we wanted updated version of faraday which is a dependency for slack-ruby-client
 gem 'azure-storage-blob', git: 'https://github.com/chatwoot/azure-storage-ruby', branch: 'chatwoot', require: false
-gem 'google-cloud-storage', require: false
+gem 'google-cloud-storage', '>= 1.45.0', require: false
 gem 'image_processing'
 
 ##-- gems for database --#
@@ -92,7 +92,7 @@ gem 'twilio-ruby', '~> 5.66'
 # gem 'twitty', git: 'https://github.com/chatwoot/twitty'
 gem 'twitty', '~> 0.1.5'
 # facebook client
-gem 'koala'
+gem 'koala', '>= 3.5.0'
 # slack client
 gem 'slack-ruby-client', '~> 2.2.0'
 # for dialogflow integrations
@@ -209,7 +209,7 @@ group :test do
   # fast cleaning of database
   gem 'database_cleaner'
   # mock http calls
-  gem 'webmock'
+  gem 'webmock', '>= 3.19.0'
   # test profiling
   gem 'test-prof'
 end
@@ -229,10 +229,10 @@ group :development, :test do
   gem 'pry-rails'
   gem 'rspec_junit_formatter'
   gem 'rspec-rails', '>= 6.1.3'
-  gem 'rubocop', require: false
-  gem 'rubocop-performance', require: false
-  gem 'rubocop-rails', require: false
-  gem 'rubocop-rspec', require: false
+  gem 'rubocop', '>= 1.51.0', require: false
+  gem 'rubocop-performance', '>= 1.18.0', require: false
+  gem 'rubocop-rails', '>= 2.20.0', require: false
+  gem 'rubocop-rspec', '>= 2.22.0', require: false
   gem 'seed_dump'
   gem 'shoulda-matchers'
   gem 'simplecov', '0.17.1', require: false