fix: provide default S3_MODEL_PATH to delete script

Author: gary-van-woerkens

.github/workflows/delete_instance.yaml

@@ -45,5 +45,5 @@ jobs:
           S3_ACCESS_KEY_ID: ${{ secrets.S3_ACCESS_KEY_ID}}
           S3_SECRET_ACCESS_KEY: ${{ secrets.S3_SECRET_ACCESS_KEY}}
           S3_ENDPOINT_URL: ${{ vars.S3_ENDPOINT_URL }}
-          S3_MODEL_PATH: ""
+          S3_MODEL_PATH: "distilgpt2"
           INSTANCE_NAME_SUFFIX: ${{ inputs.instanceNameSuffix }}