Werk #16171: aws: Fix Cloudwatch alarms fetching

Component	Checks & agents
Title	aws: Fix Cloudwatch alarms fetching
Date	Feb 21, 2024
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.4.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.3.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.2.0p23 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.1.0p40 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

Cloudwatch alarms weren't fetched properly for environments with a lot of alarms. It resulted in missing alarms in the 'AWS/CloudWatch Alarms' service.

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