AWS signing fails when using multiple routing keys

Description

This used to happen before we disabled some tests:

I wasn't able to pinpoint the actual problem. Everything is fine as long as we use only one routing key, but as soon as we used multiple keys, all hell breaks loose...

I checked that the signing library apparently works fine; or at least it behaves similarly to the official python library for this specific request.

To debug:

Environment

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Status

Assignee

Yoann Rodière

Reporter

Yoann Rodière

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