chore: bump erlang/elixir to sonoma friendly versions

[Whoops]

Summary of changes

Updating Erlang to a version that works on Sonoma

[Whoops]

Not bumping straight to Erlang 26 and Elixir 1.15 due to issues with old dependencies we should sort out. Erlang 25.3.2.7 seems to resolve the Sonoma issues in the meantime.

[github-actions]

Coverage of commit b6843dd

Summary coverage rate:
  lines......: 89.3% (4128 of 4624 lines)
  functions..: 70.9% (2231 of 3145 functions)
  branches...: no data found

Files changed coverage rate: n/a

Download coverage report

[nlwstein]

@Whoops The Dockerfile (and perhaps other locations related to CI) does not pull from the ASDF config: https://github.com/mbta/api/blob/master/Dockerfile

[nlwstein]

(Added comment prior to submitting review - mainly just double check that CI builds pull the same version 🙂 otherwise this looks good!)

[Whoops]

Good eye! I knew we we using ASDF for CI, but didn't think to check the Dockerfile. I checked for other instances of hardcoded versions and didn't find any, so I think this covers it now.

[github-actions]

Coverage of commit b6a0b05

Summary coverage rate:
  lines......: 89.1% (4128 of 4631 lines)
  functions..: 70.9% (2231 of 3145 functions)
  branches...: no data found

Files changed coverage rate: n/a

Download coverage report

[nlwstein]

🚀