chore(deps): bump github.com/go-git/go-billy/v5 from 5.7.0 to 5.9.0

Bumps [github.com/go-git/go-billy/v5](https://github.com/go-git/go-billy) from 5.7.0 to 5.9.0.
- [Release notes](https://github.com/go-git/go-billy/releases)
- [Commits](https://github.com/go-git/go-billy/compare/v5.7.0...v5.9.0)

---
updated-dependencies:
- dependency-name: github.com/go-git/go-billy/v5
  dependency-version: 5.9.0
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/github.com/go-git/go-billy/v5/helper/polyfill/polyfill.go

@@ -13,7 +13,7 @@ type Polyfill struct {
 	c capabilities
 }
 
-type capabilities struct{ tempfile, dir, symlink, chroot bool }
+type capabilities struct{ tempfile, dir, symlink, chroot, chmod bool }
 
 // New creates a new filesystem wrapping up 'fs' the intercepts all the calls
 // made and errors if fs doesn't implement any of the billy interfaces.
@@ -28,6 +28,7 @@ func New(fs billy.Basic) billy.Filesystem {
 	_, h.c.dir = h.Basic.(billy.Dir)
 	_, h.c.symlink = h.Basic.(billy.Symlink)
 	_, h.c.chroot = h.Basic.(billy.Chroot)
+	_, h.c.chmod = h.Basic.(billy.Chmod)
 	return h
 }
 
@@ -87,6 +88,14 @@ func (h *Polyfill) Chroot(path string) (billy.Filesystem, error) {
 	return h.Basic.(billy.Chroot).Chroot(path)
 }
 
+func (h *Polyfill) Chmod(path string, mode os.FileMode) error {
+	if !h.c.chmod {
+		return billy.ErrNotSupported
+	}
+
+	return h.Basic.(billy.Chmod).Chmod(path, mode)
+}
+
 func (h *Polyfill) Root() string {
 	if !h.c.chroot {
 		return string(filepath.Separator)