Update fastwalk to v1.0.8 for better MSYS detection and sorting (#3930)

This commit updates github.com/charlievieth/fastwalk to v1.0.8 which
improves MSYS detection and adds optional sorting of directory entries.
It also updates fzf to use the SortFilesFirst sort mode which improves
the output by making it a bit more sorted and grouped by directory
previously entries were visited in directory order (which is basically
random).

PRs Included:

  * https://github.com/charlievieth/fastwalk/pull/25
  * https://github.com/charlievieth/fastwalk/pull/27
  * https://github.com/charlievieth/fastwalk/pull/28

go.mod

@@ -1,7 +1,7 @@
 module github.com/junegunn/fzf
 
 require (
-	github.com/charlievieth/fastwalk v1.0.7-0.20240703190418-87029d931815
+	github.com/charlievieth/fastwalk v1.0.8
 	github.com/gdamore/tcell/v2 v2.7.4
 	github.com/mattn/go-isatty v0.0.20
 	github.com/mattn/go-shellwords v1.0.12

go.sum

@@ -1,5 +1,5 @@
-github.com/charlievieth/fastwalk v1.0.7-0.20240703190418-87029d931815 h1:4PRbYm9OMgH0bcdZZqMXA/AoOvpGy4l0H6g9Au/kgGA=
-github.com/charlievieth/fastwalk v1.0.7-0.20240703190418-87029d931815/go.mod h1:rV19+IF9Y2TYQNy4MqEk5M/spNHjKsA0i71yrsv2p4E=
+github.com/charlievieth/fastwalk v1.0.8 h1:uaoH6cAKSk73aK7aKXqs0+bL+J3Txzd3NGH8tRXgHko=
+github.com/charlievieth/fastwalk v1.0.8/go.mod h1:yGy1zbxog41ZVMcKA/i8ojXLFsuayX5VvwhQVoj9PBI=
 github.com/gdamore/encoding v1.0.0 h1:+7OoQ1Bc6eTm5niUzBa0Ctsh6JbMW6Ra+YNuAtDBdko=
 github.com/gdamore/encoding v1.0.0/go.mod h1:alR0ol34c49FCSBLjhosxzcPHQbf2trDkoo5dl+VrEg=
 github.com/gdamore/tcell/v2 v2.7.4 h1:sg6/UnTM9jGpZU+oFYAsDahfchWAFW8Xx2yFinNSAYU=

src/reader.go

@@ -253,6 +253,7 @@ func (r *Reader) readFiles(root string, opts walkerOpts, ignores []string) bool
 		Follow: opts.follow,
 		// Use forward slashes when running a Windows binary under WSL or MSYS
 		ToSlash: fastwalk.DefaultToSlash(),
+		Sort:    fastwalk.SortFilesFirst,
 	}
 	fn := func(path string, de os.DirEntry, err error) error {
 		if err != nil {