Context

Update and dedupe some JS dependencies in yarn.lock
Bump Ruby version from 3.1.0 (major version was just recently bumped in https://github.com/RefugeRestrooms/refugerestrooms/pull/675) to 3.1.2 for patch-level updates

Summary of Changes

Update the "terser" JS package
- terser version 4.8.0 --> 4.8.1
- terser version 5.7.0 --> 5.15.1
Dedupe all JS dependencies in yarn.lock
- Saves about 6 to 8 MB on disk, and reduces node_modules by about 900 files
- Before: "Total disk usage: 202.0 MiB Apparent size: 129.0 MiB Items: 28309"
- After: "Total disk usage: 194.4 MiB Apparent size: 122.8 MiB Items: 27395"
Update the Ruby version from 3.1.0, which it was updated to just recently in PR https://github.com/RefugeRestrooms/refugerestrooms/pull/675, to now be version 3.1.2
- Ruby version 3.1.0 --> 3.1.2, for patch-level updates