Update datascience notebook versions

datascience-notebook/Dockerfile

@@ -46,14 +46,14 @@ USER $NB_UID
 # R packages including IRKernel which gets installed globally.
 RUN conda install --quiet --yes \
     'rpy2=2.9*' \
-    'r-base=3.5.1' \
-    'r-irkernel=0.8*' \
+    'r-base=3.6.1' \
+    'r-irkernel=1.0*' \
     'r-plyr=1.8*' \
-    'r-devtools=1.13*' \
+    'r-devtools=2.1*' \
     'r-tidyverse=1.2*' \
-    'r-shiny=1.2*' \
-    'r-rmarkdown=1.11*' \
-    'r-forecast=8.2*' \
+    'r-shiny=1.3*' \
+    'r-rmarkdown=1.14*' \
+    'r-forecast=8.7*' \
     'r-rsqlite=2.1*' \
     'r-reshape2=1.4*' \
     'r-nycflights13=1.0*' \
@@ -62,8 +62,8 @@ RUN conda install --quiet --yes \
     'r-crayon=1.3*' \
     'r-randomforest=4.6*' \
     'r-htmltools=0.3*' \
-    'r-sparklyr=0.9*' \
-    'r-htmlwidgets=1.2*' \
+    'r-sparklyr=1.0*' \
+    'r-htmlwidgets=1.3*' \
     'r-hexbin=1.27*' && \
     conda clean --all -f -y && \
     fix-permissions $CONDA_DIR && \