Update iron-io/iron_mq requirement from ~1.4 to ~1.4 || ~4.0#4

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dependabot-preview[bot] wants to merge 1 commit intomasterfrom dependabot/composer/iron-io/iron_mq-approx-1.4or-approx-4.0

+1-1

Commits on Aug 27, 2020

Update iron-io/iron_mq requirement from ~1.4 to ~1.4 || ~4.0
dependabot-preview[bot]
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