Update dependencies (#1951)

vendor/github.com/spf13/afero/util.go

@@ -25,6 +25,7 @@ import (
 	"strings"
 	"unicode"
 
+	"golang.org/x/text/runes"
 	"golang.org/x/text/transform"
 	"golang.org/x/text/unicode/norm"
 )
@@ -158,16 +159,12 @@ func UnicodeSanitize(s string) string {
 
 // Transform characters with accents into plain forms.
 func NeuterAccents(s string) string {
-	t := transform.Chain(norm.NFD, transform.RemoveFunc(isMn), norm.NFC)
+	t := transform.Chain(norm.NFD, runes.Remove(runes.In(unicode.Mn)), norm.NFC)
 	result, _, _ := transform.String(t, string(s))
 
 	return result
 }
 
-func isMn(r rune) bool {
-	return unicode.Is(unicode.Mn, r) // Mn: nonspacing marks
-}
-
 func (a Afero) FileContainsBytes(filename string, subslice []byte) (bool, error) {
 	return FileContainsBytes(a.Fs, filename, subslice)
 }
@@ -299,6 +296,9 @@ func IsEmpty(fs Fs, path string) (bool, error) {
 		}
 		defer f.Close()
 		list, err := f.Readdir(-1)
+		if err != nil {
+			return false, err
+		}
 		return len(list) == 0, nil
 	}
 	return fi.Size() == 0, nil