Log Message:
sysutils/capistrano: update to 3.16.0

3.16.0 (2021-02-28)

New Features

* Add a :verify_commit option; if enabled, checks that the revision being
  deployed has a valid signature (git only) (#2076) @mohamedhafez

Housekeeping

* Fix cucumber puts deprecation warnings (#2075) @mattbrictson