Update c/image for https://github.com/containers/image/pull/912

This is an unreleased version of c/image, but it is important to
to have the test added in in the next commit enforcing as soon as
possible.

> go get github.com/containers/image/v5@HEAD
> make vendor

Signed-off-by: Miloslav Trmač <mitr@redhat.com>

vendor/github.com/vbauerster/mpb/v5/internal/percentage.go

@@ -7,6 +7,9 @@ func Percentage(total, current int64, width int) float64 {
 	if total <= 0 {
 		return 0
 	}
+	if current >= total {
+		return float64(width)
+	}
 	return float64(int64(width)*current) / float64(total)
 }