Update activesupport requirement from ~> 3.0.4 to >= 3.0.4, < 6.1.0#16

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dependabot/bundler/activesupport-gte-3.0.4-and-lt-6.1.0mtodd/pingdom-client:dependabot/bundler/activesupport-gte-3.0.4-and-lt-6.1.0Copy head branch name to clipboard