gnu: dovecot: Update to 2.3.5.1 [fixes CVE-2019-7524].

* gnu/packages/mail.scm (dovecot): Update to 2.3.5.1.

gnu/packages/mail.scm

@@ -1287,7 +1287,7 @@ facilities for checking incoming mail.")
 (define-public dovecot
   (package
     (name "dovecot")
-    (version "2.3.5")
+    (version "2.3.5.1")
     (source
      (origin
        (method url-fetch)
@@ -1295,7 +1295,8 @@ facilities for checking incoming mail.")
                            (version-major+minor version) "/"
                            "dovecot-" version ".tar.gz"))
        (sha256
-        (base32 "1zxa9banams9nmk99sf1rqahr11cdqxhwi7hyz3ddxqidpn15qdz"))))
+        (base32
+         "0gy3qzwbp6zsyn44pcfq8iiv9iy9q7z6py30h60alb1vkr3rv3yp"))))
     (build-system gnu-build-system)
     (native-inputs
      `(("pkg-config" ,pkg-config)))