ruby/rubygems bundler-v2.2.21

on GitHub

Security fixes:

• Auto-update insecure lockfile to split GEM source sections whenever possible #4647

Enhancements:

• Use a more limited number of threads when fetching in parallel from the Compact Index API #4670
• Update TODO link in bundle gem template to https #4671

Bug fixes:

• Fix bundle install --local hitting the network when cache_all_platforms configured #4677