Update afero to v1.15.0

Signed-off-by: Mark Sagi-Kazar <[email protected]>

Author: sagikazarmark

sftpfs/go.mod

@@ -6,7 +6,7 @@ replace github.com/spf13/afero => ../
 
 require (
 	github.com/pkg/sftp v1.13.8
-	github.com/spf13/afero v1.14.0
+	github.com/spf13/afero v1.15.0
 	golang.org/x/crypto v0.36.0
 )