bump dependencies

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

@@ -0,0 +1,39 @@
+package getter
+
+import (
+	"compress/gzip"
+	"fmt"
+	"os"
+	"path/filepath"
+)
+
+// TarGzipDecompressor is an implementation of Decompressor that can
+// decompress tar.gzip files.
+type TarGzipDecompressor struct{}
+
+func (d *TarGzipDecompressor) Decompress(dst, src string, dir bool) error {
+	// If we're going into a directory we should make that first
+	mkdir := dst
+	if !dir {
+		mkdir = filepath.Dir(dst)
+	}
+	if err := os.MkdirAll(mkdir, 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 fmt.Errorf("Error opening a gzip reader for %s: %s", src, err)
+	}
+	defer gzipR.Close()
+
+	return untar(gzipR, dst, src, dir)
+}