Fix to import as digest

Signed-off-by: Seiya Miyata <[email protected]>

Author: 38tter

solver/llbsolver/solver.go

@@ -34,7 +34,7 @@ import (
 	"github.com/moby/buildkit/util/progress"
 	"github.com/moby/buildkit/util/tracing/detect"
 	"github.com/moby/buildkit/worker"
-	"github.com/opencontainers/go-digest"
+	digest "github.com/opencontainers/go-digest"
 	"github.com/pkg/errors"
 	"go.opentelemetry.io/otel/sdk/trace/tracetest"
 	"go.opentelemetry.io/otel/trace"