gnu: samba: Update to 4.9.4.

* gnu/packages/samba.scm (samba): Update to 4.9.4.

gnu/packages/samba.scm

@@ -150,14 +150,14 @@ anywhere.")
 (define-public samba
   (package
     (name "samba")
-    (version "4.9.3")
+    (version "4.9.4")
     (source (origin
              (method url-fetch)
              (uri (string-append "https://download.samba.org/pub/samba/stable/"
                                  "samba-" version ".tar.gz"))
              (sha256
               (base32
-               "1krm47x08c0vcrq12dxs8mbicma1ck2sl1i0hgkvrmwsgrqdi3yg"))))
+               "0kqbzywlnh1skg6g78qilyn12qv7wri66h5v9f77igncpkcai63d"))))
     (build-system gnu-build-system)
     (arguments
      `(#:phases