Update c/image for golang.org/x/exp

> go get github.com/containers/image/v5@main
> go mod tidy && go mod vendor

This updates c/image with a new version of x/exp.
That package has changed API in an incompatible way,
so just bumping x/exp (as in https://github.com/containers/skopeo/pull/2060 )
would break Skopeo builds.

This updates both c/image and x/exp in lockstep (and nothing
needs updating in Skopeo itself for the x/exp breakage).

Signed-off-by: Miloslav Trmač <mitr@redhat.com>

vendor/github.com/containers/storage/drivers/driver.go

@@ -191,10 +191,27 @@ type DriverWithDifferOutput struct {
 	TOCDigest          digest.Digest
 }
 
+type DifferOutputFormat int
+
+const (
+	// DifferOutputFormatDir means the output is a directory and it will
+	// keep the original layout.
+	DifferOutputFormatDir = iota
+	// DifferOutputFormatFlat will store the files by their checksum, in the form
+	// checksum[0:2]/checksum[2:]
+	DifferOutputFormatFlat
+)
+
+// DifferOptions overrides how the differ work
+type DifferOptions struct {
+	// Format defines the destination directory layout format
+	Format DifferOutputFormat
+}
+
 // Differ defines the interface for using a custom differ.
 // This API is experimental and can be changed without bumping the major version number.
 type Differ interface {
-	ApplyDiff(dest string, options *archive.TarOptions) (DriverWithDifferOutput, error)
+	ApplyDiff(dest string, options *archive.TarOptions, differOpts *DifferOptions) (DriverWithDifferOutput, error)
 }
 
 // DriverWithDiffer is the interface for direct diff access.