Log Message:
sysutils/capistrano: update to 3.11.2

Update capistrano to 3.11.2.

pkgsr changes:

* Drop use of USE_RAKE.
* Add "USE_LANGUAGES=	# none".

3.11.1 (2019-08-29)

* #2027: Batch rm -rf calls in deploy:cleanup to fix an error when there are
  too many old releases @azin634

3.11.2 (2019-09-29)

Housekeeping

* Eliminate double CI builds on PRs (#2035) @mattbrictson
* Update gemspec with correct release notes URL, etc. (#2036) @mattbrictson
* Automatically maintain release notes using GitHub Actions (#2034)
  @mattbrictson
* Use a stub for $stdin during testing (#2033) @mattbrictson
* Upgrade nokogiri to fix security warning (#2031) @mattbrictson
* Exclude danger to fix Ruby 2.0.0 CI error (#2030) @mattbrictson