adding eastus as allowed region

Allow eastus region

infra/main.bicep

@@ -5,7 +5,7 @@ targetScope = 'subscription'
 @description('Name which is used to generate a short unique hash for each resource')
 param environmentName string
 
-@allowed(['eastus2','swedencentral','northcentralus','francecentral'])
+@allowed(['eastus2','swedencentral','northcentralus','francecentral', 'eastus'])
 @minLength(1)
 @description('Primary location for all resources')
 @metadata({