ci: exclude internal/cublas from vet (purego GPU binding)

The cublas package uses the same uintptr-to-unsafe.Pointer pattern as
other GPU runtime binding packages for storing C library handles via
purego/dlopen. Add it to the vet exclusion list alongside internal/cuda,
internal/hip, etc.

Triggered by the new Handle.Ptr() method added for the fused encoder
kernel orchestrator.

Author: dndungu

.github/workflows/ci.yml

@@ -18,5 +18,5 @@ jobs:
           # Run go vet on all packages except those with intentional
           # unsafe.Pointer usage for GPU runtime bindings via purego/dlopen.
           # These warnings are expected and documented in docs/QUALITY.md.
-          go vet $(go list ./... | grep -v '/internal/cuda$' | grep -v '/internal/hip$' | grep -v '/internal/opencl$' | grep -v '/internal/cudnn$' | grep -v '/internal/tensorrt$' | grep -v '/internal/fpga$' | grep -v '/internal/sycl$' | grep -v '/internal/metal$' | grep -v '/internal/pjrt$' | grep -v '/internal/nccl$')
+          go vet $(go list ./... | grep -v '/internal/cuda$' | grep -v '/internal/cublas$' | grep -v '/internal/hip$' | grep -v '/internal/opencl$' | grep -v '/internal/cudnn$' | grep -v '/internal/tensorrt$' | grep -v '/internal/fpga$' | grep -v '/internal/sycl$' | grep -v '/internal/metal$' | grep -v '/internal/pjrt$' | grep -v '/internal/nccl$')
       - run: go test -race -timeout 300s ./...