fix: default flavor name

Author: gary-van-woerkens

.github/workflows/create_instance.yaml

@@ -12,9 +12,9 @@ on:
         required: false
         default: ''
       ovhInstanceFlavorName:
-        description: 'OVH instance flavor name'
+        description: 'OVH GPU instance flavor name'
         required: true
-        default: 'b2-30'
+        default: 'l4-90'
       ovhInstanceImageName:
         description: 'OVH instance image name'
         required: true