changed dlsps image

Author: athina98

metro-ai-suite/metro-vision-ai-app-recipe/.env

@@ -10,7 +10,7 @@
 HOST_IP=0.0.0.0
 
 # DL Streamer Pipeline Server
-DLSTREAMER_PIPELINE_SERVER_IMAGE=intel/dlstreamer-pipeline-server:weekly-2025.2-20251007-ubuntu24
+DLSTREAMER_PIPELINE_SERVER_IMAGE=intel/dlstreamer-pipeline-server:3.1.0-ubuntu24
 
 # This variable identifies the name of the application to be used.
 # It should match the name of the application directory in the metro-ai-suite.