fix: update deprecated openai model version (#1962)

Author: Priyanka-Microsoft

infra/main.bicep

@@ -151,11 +151,14 @@ param useAdvancedImageProcessing bool = false
 param advancedImageProcessingMaxImages int = 1
 
 @description('Optional. Azure OpenAI Vision Model Deployment Name.')
-param azureOpenAIVisionModel string = 'gpt-4'
+param azureOpenAIVisionModel string = 'gpt-4.1-vision'
 
 @description('Optional. Azure OpenAI Vision Model Name.')
 param azureOpenAIVisionModelName string = 'gpt-4.1'
 
+@description('Optional. Azure OpenAI Vision Model Version.')
+param azureOpenAIVisionModelVersion string = '2025-04-14'
+
 @description('Optional. Azure OpenAI Vision Model Capacity - See here for more info  https://learn.microsoft.com/en-us/azure/ai-services/openai/how-to/quota.')
 param azureOpenAIVisionModelCapacity int = 10
 
@@ -969,6 +972,7 @@ var openAiDeployments = concat(
           model: {
             format: 'OpenAI'
             name: azureOpenAIVisionModelName
+            version: azureOpenAIVisionModelVersion
           }
           sku: {
             name: 'GlobalStandard'

infra/main.parameters.json

@@ -127,7 +127,7 @@
       "value": "${ADVANCED_IMAGE_PROCESSING_MAX_IMAGES=1}"
     },
     "azureOpenAIVisionModel": {
-      "value": "${AZURE_OPENAI_VISION_MODEL=gpt-4}"
+      "value": "${AZURE_OPENAI_VISION_MODEL=gpt-4.1-vision}"
     },
     "azureOpenAIVisionModelName": {
       "value": "${AZURE_OPENAI_VISION_MODEL_NAME=gpt-4.1}"

infra/modules/cognitive-services/account/cognitive-services.bicep

@@ -593,8 +593,8 @@ type deploymentType = {
     @description('Required. The format of Cognitive Services account deployment model.')
     format: string
 
-    @description('Optional. The version of Cognitive Services account deployment model.')
-    version: string?
+    @description('Required. The version of Cognitive Services account deployment model.')
+    version: string
   }
 
   @description('Optional. The resource model definition representing SKU.')