fix: remove unsupported CUDA versions from tests.json

Remove CUDA 12.1-12.4 from allowedCudaVersions as they cause
compatibility issues with worker deployment. Keep only 12.5-12.9.

Based on runpod-workers#236

Author: endolith

.runpod/tests.json

@@ -30,24 +30,20 @@
     }
   ],
   "config": {
-    "gpuTypeId": "NVIDIA GeForce RTX 4090",
+    "gpuTypeId": "NVIDIA RTX A4000",
     "gpuCount": 1,
     "env": [
       {
         "key": "MODEL_NAME",
-        "value": "HuggingFaceTB/SmolLM2-135M-Instruct"
+        "value": "microsoft/phi-3.5-mini-instruct"
       }
     ],
     "allowedCudaVersions": [
       "12.9",
       "12.8",
       "12.7",
       "12.6",
-      "12.5",
-      "12.4",
-      "12.3",
-      "12.2",
-      "12.1"
+      "12.5"
     ]
   }
 }