Update Lab 16 status to released and adjust target date

Author: JulianePadrao

Instructions/Labs/16-diagnose-slow-query-copilot.md

@@ -6,8 +6,8 @@ lab:
     duration: 20  # duration in minutes
     level: 300 # 100 basic concepts, 200 foundations, 300 practical usage, 400 advanced scenarios, 500 expert design
     islab: true # if this is not a lab that should be listed in the catalog, set to false
-    status: 'in-development' # in-development or released
-    targetDate: '2026-07-01' # Set to the future date when you expect an in-development lab to be released
+    status: 'released' # in-development or released
+    targetDate: '2026-06-18' # Set to the future date when you expect an in-development lab to be released
 ---
 
 # Diagnose a slow query with Copilot