Werk #19946: Cisco Meraki: fix expiration date parsing in licenses overview

Component	Checks & agents
Title	Cisco Meraki: fix expiration date parsing in licenses overview
Date	Apr 30, 2026
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.6.0b1 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.5.0p2 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Previously, the Cisco Meraki organization licenses overview service did not appropriately handle expiration dates that were not in the expected format: Feb 1, 2000 UTC.

For instance, some licenses have a "N/A" value for the expiration date which would cause the plugin to report an error. This case is now handled and will simply not shown in the service summary.

This is the same behavior as was implemented in the original MKP; it was simply overlooked when porting.

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