Matt Wang 396613820f
ci: bump Ruby to 3.2, changes core test matrix to 3.x (#1325)
Ruby 3.2 has stabilized (and the bug with Liquid has been patched). I think this is a good time for us to bump all of our versions, especially with the discussion in #1307.

Separately, I've:

- changed the core test matrix to be across `3.0`, `3.1`, and `3.2`. Ruby 2 has been EOL for ~ 4 months, while 3.0 is around for about 7 more months. 
- standardized the formatting of our CI ruby versions to be strings; this is because the number `3.0` gets YAML-casted to `3`
2023-08-22 18:49:39 -04:00
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2022-03-03 18:50:33 +00:00