Revert image on benchmarks until verified

Included a harmless TODO note so that we remember to come back to this
once the benchmark is verified with the latest Hugging Face DLC for TGI
cc @annapendleton

benchmarks/inference-server/text-generation-inference/manifest-templates/text-generation-inference.tftpl

@@ -51,7 +51,7 @@ spec:
         - name: text-generation-inference
           ports:
             - containerPort: 80
-          image: "us-docker.pkg.dev/deeplearning-platform-release/gcr.io/huggingface-text-generation-inference-cu121.2-2.ubuntu2204.py310"
+          image: "ghcr.io/huggingface/text-generation-inference:1.4.2"  # TODO(annapendleton,alvarobartt): update to Hugging Face DLC once verified
           args: ["--model-id", "${model_id}", "--num-shard", "${gpu_count}", "--max-concurrent-requests", "${max_concurrent_requests}"]
           env:
 %{ for hugging_face_token_secret in hugging_face_token_secret_list ~}