bump dependencies

vendor/github.com/jesseduffield/go-getter/decompress_gzip.go

@@ -0,0 +1,49 @@
+package getter
+
+import (
+	"compress/gzip"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+)
+
+// GzipDecompressor is an implementation of Decompressor that can
+// decompress gzip files.
+type GzipDecompressor struct{}
+
+func (d *GzipDecompressor) Decompress(dst, src string, dir bool) error {
+	// Directory isn't supported at all
+	if dir {
+		return fmt.Errorf("gzip-compressed files can only unarchive to a single file")
+	}
+
+	// If we're going into a directory we should make that first
+	if err := os.MkdirAll(filepath.Dir(dst), 0755); err != nil {
+		return err
+	}
+
+	// File first
+	f, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	// gzip compression is second
+	gzipR, err := gzip.NewReader(f)
+	if err != nil {
+		return err
+	}
+	defer gzipR.Close()
+
+	// Copy it out
+	dstF, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer dstF.Close()
+
+	_, err = io.Copy(dstF, gzipR)
+	return err
+}