update r-base to R 3.2.3 released on December 14

library/r-base

@@ -1,6 +1,6 @@
 # maintainer: "Carl Boettiger" <[email protected]> (@cboettig)
 # maintainer: "Dirk Eddelbuettel" <[email protected]> (@eddelbuettel)
 
-3.2.2: git://github.com/rocker-org/rocker@ee6e1da2e7020978a6aaf3916f8aba9edd16e72d r-base
-latest: git://github.com/rocker-org/rocker@ee6e1da2e7020978a6aaf3916f8aba9edd16e72d r-base
+3.2.3: git://github.com/rocker-org/rocker@eeb9c8a5f416f7cfe982734440e39fa72abbcb33 r-base
+latest: git://github.com/rocker-org/rocker@eeb9c8a5f416f7cfe982734440e39fa72abbcb33 r-base