Change createdDate to use utcNow function

Updated createdDate parameter to use utcNow function.

Author: Harmanpreet-Microsoft

infra/main.bicep

@@ -137,7 +137,7 @@ var abbrs = loadJsonContent('./abbreviations.json')
 @description('Optional created by user name')
 param createdBy string = empty(deployer().userPrincipalName) ? '' : split(deployer().userPrincipalName, '@')[0]
 @description('Deployment UTC timestamp')
-param createdDate string ='yyyy-MM-ddTHH:mm:ssZ'
+param createdDate string = any('utcNow(''yyyy-MM-ddTHH:mm:ssZ'')')
 // ========== Resource Group Tag ========== //
 resource resourceGroupTags 'Microsoft.Resources/tags@2021-04-01' = {
   name: 'default'