gnu: r-rstpm2: Update to 1.6.3.

* gnu/packages/cran.scm (r-rstpm2): Update to 1.6.3.
[propagated-inputs]: Add r-mvtnorm.

Change-Id: If1b2717851f2da6cae135c43fc00afb2bcdb9f80

gnu/packages/cran.scm

@@ -4490,14 +4490,14 @@ (define-public r-fastghquad
 (define-public r-rstpm2
   (package
     (name "r-rstpm2")
-    (version "1.6.2")
+    (version "1.6.3")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "rstpm2" version))
        (sha256
         (base32
-         "1qxd1ffim2nsa16jqnxbq2imhicdhc3z7b55wz549zybdv2whkh6"))))
+         "07q3n9hv8azwiipggyb6ykhvb8qy10s4nkp5irv76d54fsl7jq2y"))))
     (properties `((upstream-name . "rstpm2")))
     (build-system r-build-system)
     (propagated-inputs
@@ -4506,6 +4506,7 @@ (define-public r-rstpm2
            r-desolve
            r-fastghquad
            r-mgcv
+           r-mvtnorm
            r-rcpp
            r-rcpparmadillo
            r-survival))