Update Rakefile

Author: daianamezdrea

Rakefile

@@ -48,7 +48,7 @@ if Bundler.rubygems.find_name('github_changelog_generator').any?
     raise "Set CHANGELOG_GITHUB_TOKEN environment variable eg 'export CHANGELOG_GITHUB_TOKEN=valid_token_here'" if Rake.application.top_level_tasks.include? "changelog" and ENV['CHANGELOG_GITHUB_TOKEN'].nil?
     config.user = "#{changelog_user}"
     config.project = "#{changelog_project}"
-    config.since_tag = "v11.0.0"
+    config.since_tag = "v11.0.3"
     config.future_release = "#{changelog_future_release}"
     config.exclude_labels = ['maintenance']
     config.header = "# Change log\n\nAll notable changes to this project will be documented in this file. The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](http://semver.org)."