gnu: parallel: Update to 20190422.

* gnu/packages/parallel.scm (parallel): Update to 20190422.

gnu/packages/parallel.scm

@@ -48,14 +48,14 @@ (define-module (gnu packages parallel)
 (define-public parallel
   (package
     (name "parallel")
-    (version "20190322")
+    (version "20190422")
     (source
      (origin
       (method url-fetch)
       (uri (string-append "mirror://gnu/parallel/parallel-"
                           version ".tar.bz2"))
       (sha256
-       (base32 "12q0ys0dp019wykx7jcqbrilz8798hgb66k97aj2s2m7xdpw41ym"))))
+       (base32 "0xdl5fnh1vpjp3zpmqsrbbgjixazlhl4d9awk42nz4snzynysjxl"))))
     (build-system gnu-build-system)
     (arguments
      `(#:phases