Update R to 4.1.2

Summary: Changelog posted here

Test Plan:
Ran R --version in terminal
Ran install.packages("tidyverse")
Tested some simple calculations (e.g., 2+2) and linear regressions

Reviewers: Triage Team, JoshStrobl

Reviewed By: Triage Team, JoshStrobl

Subscribers: JoshStrobl

Differential Revision: https://dev.getsol.us/D12541