Update last updated date in documentation

Author: brown9804

0_Azure/3_AzureAI/AIFoundry/demos/8_Enable-APIKeys-Foundry.md

@@ -5,7 +5,7 @@ Costa Rica
 [![GitHub](https://img.shields.io/badge/--181717?logo=github&logoColor=ffffff)](https://github.com/)
 [brown9804](https://github.com/brown9804)
 
-Last updated: 2025-07-17
+Last updated: 2025-12-17
 
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