Merge [rstudio_os_rewrite_ac] into [development]

Updates R-Studio server to latest available version;

Updates R packages to latest available versions;

Minor edits to dockerfile and hardening manifest for updated tags and readability/efficiency;

All CVEs have justifications provided in VAT (https://vat.dso.mil/vat/container/20667);

For related issue ticket see:

#24 (closed)