gnu: passwdqc: Update to 2.1.0.

* gnu/packages/password-utils.scm (passwdqc): Update to 2.1.0.
[source]: Switch to git-fetch.

Change-Id: I8491d6d635997b69698595eb6a406ee5207aa20d

gnu/packages/password-utils.scm

@@ -794,14 +794,17 @@ random passwords that pass the checks.")
 (define-public passwdqc
   (package
     (name "passwdqc")
-    (version "2.0.3")
-    (source (origin
-              (method url-fetch)
-              (uri (string-append "https://www.openwall.com/passwdqc/passwdqc"
-                                  "-" version ".tar.gz"))
-              (sha256
-               (base32
-                "1x4c92b3i5wmxh2111lynyndalpkryvan4wybqchd7rn96yg9c2k"))))
+    (version "2.1.0")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+              (url "https://github.com/openwall/passwdqc/")
+              (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32
+         "1717kn9jdhgga140jfscbjijxcid8zpk040l2phy3rq0hvqjgkgg"))))
     (build-system gnu-build-system)
     (arguments
      (list