Add timeout-minutes to setup-ruby job

[miq-bot]

Checked commit https://github.com/agrare/amazon_ssa_support/commit/ed345047b5645fa207e7b3ecbe73bee61208d85b with ruby 2.6.9, rubocop 1.19.1, haml-lint 0.35.0, and yamllint 1 file checked, 1 offense detected

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• [ ] :bomb: :boom: :fire: :fire_engine: - Linter/Yaml - missing config files