gnu: unbound: Update to 1.9.4.

* gnu/packages/dns.scm (unbound): Update to 1.9.4.

gnu/packages/dns.scm

@@ -373,14 +373,14 @@ (define-public nsd
 (define-public unbound
   (package
     (name "unbound")
-    (version "1.9.3")
+    (version "1.9.4")
     (source
      (origin
        (method url-fetch)
        (uri (string-append "https://www.unbound.net/downloads/unbound-"
                            version ".tar.gz"))
        (sha256
-        (base32 "1ykdy62sgzv33ggkmzwx2h0ifm7hyyxyfkb4zckv7gz4f28xsm8v"))))
+        (base32 "1c2bjm13x8bkw0ds1mhn9ivd2gzmfrb0x5y76bkz09a04bxjagix"))))
     (build-system gnu-build-system)
     (outputs '("out" "python"))
     (native-inputs