Log Message:
misc/ruby-bundler: update to 2.2.5

2.2.5 (January 11, 2021)

Enhancements:

* Improve rubocop setup in the new gem template #4220
* Support repositories with default branch not named master #4224

Bug fixes:

* Let Net::HTTP decompress the index instead of doing it manually #4081
* Workaround for another jruby crash when autoloading a constant #4252
* Fix another performance regression in the resolver #4243
* Restore support for old git versions #4233
* Give a proper error if cache path does not have write access #4215
* Fix running rake release from an ambiguous ref #4219