gnu: r-xgboost: Update to 1.0.0.1.

* gnu/packages/cran.scm (r-xgboost): Update to 1.0.0.1.
[native-inputs]: Add r-knitr.

gnu/packages/cran.scm

@@ -15346,20 +15346,22 @@ the current document.")
 (define-public r-xgboost
   (package
     (name "r-xgboost")
-    (version "0.90.0.2")
+    (version "1.0.0.1")
     (source
      (origin
        (method url-fetch)
        (uri (cran-uri "xgboost" version))
        (sha256
         (base32
-         "1gy9rzg43mjpfis893vf15drmbigfn0481zrzss9ajnmnk0q8194"))))
+         "0fx5qjpjjirzhplddqmxlysyqszp79w74x00b5shp6p2lzy6yd9a"))))
     (build-system r-build-system)
     (propagated-inputs
      `(("r-data-table" ,r-data-table)
        ("r-magrittr" ,r-magrittr)
        ("r-matrix" ,r-matrix)
        ("r-stringi" ,r-stringi)))
+    (native-inputs
+     `(("r-knitr" ,r-knitr)))
     (home-page "https://github.com/dmlc/xgboost")
     (synopsis "Extreme gradient boosting")
     (description