Dependabot can't evaluate your Ruby dependency files

[dependabot-preview]

Dependabot can't evaluate your Ruby dependency files.

As a result, Dependabot couldn't check whether any of your dependencies are out-of-date.

The error Dependabot encountered was:

Bundler::Dsl::DSLError with message: 
[!] There was an error parsing `Gemfile`: 
[!] There was an error while loading `fat_table.gemspec`: undefined method `strip_heredoc' for #<String:0x000055d6257987f8>. Bundler cannot continue.

 #  from /home/dependabot/dependabot-updater/dependabot_tmp_dir/fat_table.gemspec:19
 #  -------------------------------------------
 #    spec.summary       = 'Provides tools for working with tables as a data type.'
 >    spec.description   = <<-DESC.strip_heredoc
 #      FatTable is a gem that treats tables as a data type. It provides methods for
 #  -------------------------------------------
. Bundler cannot continue.

 #  from /home/dependabot/dependabot-updater/dependabot_tmp_dir/Gemfile:4
 #  -------------------------------------------
 #  # Specify your gem's dependencies in fat_table.gemspec
 >  gemspec
 #  -------------------------------------------