bintray: fix style

[bayandin]

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same change?
• Have you added an explanation of what your changes do and why you'd like us to include them?
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• Have you successfully run brew style with your changes locally?
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Minor code style fixed as suggested in #7415 (comment)

[Bo98]

Can you rebase on master to get the workflow changes?

[bayandin]

Can you rebase on master to get the workflow changes?

Done

[Bo98]

Cool, thanks!

[MikeMcQuaid]

Thanks @bayandin!