Update the RuboCop configuration

[tylervz]

Updated the RuboCop configuration file so that Travis CI builds no longer fail.

https://docs.rubocop.org/rubocop/1.19/cops_style.html#stylemissingrespondtomissing

The changes were based on the error output from this failed run on Travis CI: https://app.travis-ci.com/github/bamlab/fastlane-plugin-cordova/builds/230500476

And errors I got from running rake locally:

The `Lint/HandleExceptions` cop has been renamed to `Lint/SuppressedException`.
(obsolete configuration found in .rubocop.yml, please update it)
The `Style/BracesAroundHashParameters` cop has been removed. Please use  and/or  instead.
(obsolete configuration found in .rubocop.yml, please update it)