gnu: r-bayesm: Update to 3.1-5.

* gnu/packages/cran.scm (r-bayesm): Update to 3.1-5.
[native-inputs]: Add r-knitr.

gnu/packages/cran.scm

@@ -18037,16 +18037,17 @@ identifying outliers.")
 (define-public r-bayesm
   (package
     (name "r-bayesm")
-    (version "3.1-4")
+    (version "3.1-5")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "bayesm" version))
        (sha256
-        (base32 "154glks7rsjkza0sfi1kj7wj727py9sl1ba6sswflwmwc9n226q6"))))
+        (base32 "18j7h32nq4hx1qnxfgfgz3q39q35lmvsq3im90xjkphyli60f8zj"))))
     (build-system r-build-system)
     (propagated-inputs
      (list r-rcpp r-rcpparmadillo))
+    (native-inputs (list r-knitr))
     (home-page "http://www.perossi.org/home/bsm-1")
     (synopsis "Bayesian inference for marketing/micro-econometrics")
     (description