Add sigdump gem

This tool is helpful in debugging hung requests

Gemfile

@@ -393,6 +393,8 @@ group :development, :test do
   gem 'parallel', '~> 1.19', require: false
 
   gem 'test_file_finder', '~> 0.1.3'
+
+  gem 'sigdump', '~> 0.2.4', require: 'sigdump/setup'
 end
 
 group :development, :test, :danger do

Gemfile.lock

@@ -1178,6 +1178,7 @@ GEM
     sidekiq-cron (1.2.0)
       fugit (~> 1.1)
       sidekiq (>= 4.2.1)
+    sigdump (0.2.4)
     signet (0.14.0)
       addressable (~> 2.3)
       faraday (>= 0.17.3, < 2.0)
@@ -1619,6 +1620,7 @@ DEPENDENCIES
   shoulda-matchers (~> 4.0.1)
   sidekiq (~> 6.4)
   sidekiq-cron (~> 1.2)
+  sigdump (~> 0.2.4)
   simple_po_parser (~> 1.1.2)
   simplecov (~> 0.18.5)
   simplecov-cobertura (~> 1.3.1)