Update config for new upgrade

Author: danielleiwood

.circleci/config.yml

@@ -21,7 +21,7 @@ jobs:
           command: |
             Rscript -e "print(R.version)"
             Rscript -e "utils::install.packages('hutilscpp', repos = 'https://cran.rstudio.com')"
-            Rscript -e "devtools::install_deps(dependencies = TRUE, upgrade = 'false', keep_source = FALSE)"
+            Rscript -e "devtools::install_deps(dependencies = TRUE, upgrade = 'never')"
       - run:
           no_output_timeout: 20m
           command: |