vendor: update all dependencies

vendor/cloud.google.com/go/bigquery/iterator.go

@@ -92,6 +92,9 @@ type RowIterator struct {
 // A repeated field corresponds to a slice or array of the element type.
 // A RECORD type (nested schema) corresponds to a nested struct or struct pointer.
 // All calls to Next on the same iterator must use the same struct type.
+//
+// It is an error to attempt to read a BigQuery NULL value into a struct field.
+// If your table contains NULLs, use a *[]Value or *map[string]Value.
 func (it *RowIterator) Next(dst interface{}) error {
 	var vl ValueLoader
 	switch dst := dst.(type) {
@@ -141,14 +144,7 @@ func (it *RowIterator) fetch(pageSize int, pageToken string) (string, error) {
 		pc.startIndex = it.StartIndex
 	}
 	it.pf.setPaging(pc)
-	var res *readDataResult
-	var err error
-	for {
-		res, err = it.pf.fetch(it.ctx, it.service, pageToken)
-		if err != errIncompleteJob {
-			break
-		}
-	}
+	res, err := it.pf.fetch(it.ctx, it.service, pageToken)
 	if err != nil {
 		return "", err
 	}