Werk #16742: jenkins_nodes: Fix 'newline not allowed in service summary'

Component	Checks & agents
Title	jenkins_nodes: Fix 'newline not allowed in service summary'
Date	Jun 3, 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 2.3.0p5 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.2.0p28 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.1.0p44 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

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