misc/ruby-bundler: update to 2.2.13

2.2.13 (March 3, 2021)

Enhancements:

* Respect user configured default branch in README links in new generated
  gems #4303

Bug fixes:

* Fix gems sometimes being pulled from irrelevant sources #4418

2.2.12 (March 1, 2021)

Bug fixes:

* Fix sporadic warnings about nil gemspec on install/update and make those
  faster #4409

* Fix deployment install with duplicate path gems added to Gemfile #4410

2.2.11 (February 17, 2021)

Bug fixes:

* Revert disable_multisource changes #4385

2.2.10 (February 15, 2021)

Security fixes:

* Fix source priority for transitive dependencies and split lockfile
  rubygems source sections #3655

Bug fixes:

* Fix adding platforms to lockfile sometimes conflicting on ruby
  requirements #4371

* Fix bundler sometimes choosing ruby variants over java ones #4367

Documentation:

* Update man pages to reflect to new default for bundle install jobs #4188

(taca)