[CI/Build] Excluding kernels/test_gguf.py from ROCm (vllm-project#8520)

Signed-off-by: Amit Garg <mitgarg17495@gmail.com>

.buildkite/run-amd-test.sh

@@ -83,6 +83,7 @@ if [[ $commands == *" kernels "* ]]; then
   --ignore=kernels/test_encoder_decoder_attn.py \
   --ignore=kernels/test_flash_attn.py \
   --ignore=kernels/test_flashinfer.py \
+  --ignore=kernels/test_gguf.py \
   --ignore=kernels/test_int8_quant.py \
   --ignore=kernels/test_machete_gemm.py \
   --ignore=kernels/test_mamba_ssm.py \