fix(examples): make Bedrock model-import job name unique per run

The OSS-import path in bedrock-modelbuilder-deployment.ipynb hardcoded
job_name="import-llama-finetuned" and imported_model_name="llama-3-8b-finetuned".
Bedrock's CreateModelImportJob requires a unique job name, and completed
import jobs cannot be deleted, so running the notebook a second time in the
same account/region fails with "The provided job name is currently in use."

Append an int(time.time()) suffix to both names so the example is repeatable.
time is already imported in the notebook.

Author: hrehard

v3-examples/model-customization-examples/bedrock-modelbuilder-deployment.ipynb

@@ -124,9 +124,12 @@
     "# OSS path: omit custom_model_name to use create_model_import_job API\n",
     "builder_oss = BedrockModelBuilder(model=\"s3://my-bucket/models/llama-3-8b-finetuned/\")\n",
     "\n",
+    "# Import job and model names must be unique per account/region; import jobs\n",
+    "# cannot be deleted, so add a timestamp suffix to keep this example repeatable.\n",
+    "suffix = int(time.time())\n",
     "result = builder_oss.deploy(\n",
-    "    job_name=\"import-llama-finetuned\",\n",
-    "    imported_model_name=\"llama-3-8b-finetuned\",\n",
+    "    job_name=f\"import-llama-finetuned-{suffix}\",\n",
+    "    imported_model_name=f\"llama-3-8b-finetuned-{suffix}\",\n",
     "    role_arn=ROLE_ARN,\n",
     ")\n",
     "print(f\"Model ARN: {result.get('importedModelArn')}\")\n",