gnu: r-lambda-r: Update to 1.2.

* gnu/packages/statistics.scm (r-lambda-r): Update to 1.2.

gnu/packages/statistics.scm

@@ -2769,13 +2769,13 @@ plotted and compared with the asymptotic curve.")
 (define-public r-lambda-r
   (package
     (name "r-lambda-r")
-    (version "1.1.9")
+    (version "1.2")
     (source (origin
               (method url-fetch)
               (uri (cran-uri "lambda.r" version))
               (sha256
                (base32
-                "1j6287iqvs3ill6r5g6ksf5809qp0l0nf20ib8266m1r09lc9j14"))))
+                "0vql32np716dpd0kjn7s7wgawd02ysgp2a5il4kb19nlw661ii3x"))))
     (properties `((upstream-name . "lambda.r")))
     (build-system r-build-system)
     (home-page "http://cran.r-project.org/web/packages/lambda.r")