Log Message:
misc/ruby-bundler: update to 2.2.16

2.2.16 (April 8, 2021)

Enhancements:

* Add --github-username option and config to bundle gem #3687
* Bump vendored tmpdir library copy #4506
* Add rake build:checksum task to build checksums for a gem package #4156
* Enable bundler-cache for GitHub Actions template #4498
* Improve bundle info error when gem is on a "disabled" group #4492
* Small tweak to yank message #4494
* Don't show duplicate entries in bundle outdated output #4474
* Never downgrade top level gems when running bundle update #4473

Bug fixes:

* Fix incorrect logic for filtering metadata matching candidates #4497