.gitignore in slack-ruby-block-kit-0.12.0 vs .gitignore in slack-ruby-block-kit-0.13.0

@@ -6,9 +6,11 @@
 /pkg/
 /spec/reports/
 /spec/examples.txt
 /tmp/
 
+Gemfile.lock
+
 # rspec failure tracking
 .rspec_status
 *.gem
 .env