Update rake requirement to ~> 12.3.1

[dependabot-preview]

Updates the requirements on rake to permit the latest version.

Changelog

Sourced from rake's changelog.

=== 12.3.1

==== Bug fixes

• Support did_you_mean >= v1.2.0 which has a breaking change on formatters.
  Pull request #262 by FUJI Goro.

==== Enhancements:

• Don't run task if it depends on already invoked but failed task.
  Pull request #252 by Gonzalo Rodriguez.
• Make space trimming consistent for all task arguments.
  Pull request #259 by Gonzalo Rodriguez.
• Removes duplicated inclusion of Rake::DSL in tests.
  Pull request #254 by Gonzalo Rodriguez.
• Re-raise a LoadError that didn't come from require in the test loader.
  Pull request #250 by Dylan Thacker-Smith.

=== 12.3.0

==== Compatibility Changes

• Bump required_ruby_version to Ruby 2.0.0. Rake has already
  removed support for Ruby 1.9.x.

==== Enhancements:

• Support test-bundled-gems task on ruby core.

=== 12.2.1

==== Bug fixes

• Fixed to break Capistrano::Application on capistrano3.

=== 12.2.0

==== Enhancements:

• Make rake easier to use as a library
  Pull request #211 by drbrain
• Fix quadratic performance in FileTask#out_of_date?
  Pull request #224 by doudou
• Clarify output when printing nested exception traces
  Pull request #232 by urbanautomaton

==== Bug fixes

• Account for a file that match 2 or more patterns.
  Pull request #231 by styd

... (truncated)

Commits

• See full diff in compare view

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[coveralls]

Coverage remained the same at 100.0% when pulling 2e9170a on dependabot/bundler/rake-tw-12.3.1 into b42c247 on master.