KeyError: 'soft_code_freeze'

[sentry-io]

Sentry Issue: SHIPIT-API-48

KeyError: 'soft_code_freeze'
(5 additional frame(s) were not displayed)
...
  File "/app/src/src/shipit_api/admin/worker.py", line 27, in rebuild_product_details_async
    await rebuild(flask.current_app.db.session, app_channel, git_repo_url, folder_in_repo, breakpoint_version)
  File "/app/src/src/shipit_api/admin/product_details.py", line 1213, in rebuild
    "firefox_primary_builds.json": await get_primary_builds(
  File "/app/src/src/shipit_api/admin/product_details.py", line 568, in get_primary_builds
    firefox_versions = await get_firefox_versions(releases, firefox_nightly_version)
  File "/app/src/src/shipit_api/admin/product_details.py", line 751, in get_firefox_versions
    firefox_release_schedule_data = await fetch_firefox_release_schedule_data(releases, session, firefox_nightly_version)
  File "/app/src/src/shipit_api/admin/product_details.py", line 685, in fetch_firefox_release_schedule_data
    last_softfreeze_date = iso_to_ymd(previous_nightly_version_schedule["soft_code_freeze"])

error on dispatch

AFAICT this is happening because dev doesn't get its versions regularly updated. Compare the current nightly version response:

~/repos/shipit main *13 ❯ curl -Lv https://whattrainisitnow.com/api/release/schedule/\?version\=132.0a1 2>/dev/null | jq
{
  "version": "132.0",
  "nightly_start": "2024-09-02 00:00:00+00:00",
  "a11y_request_deadline": "2024-09-06 00:00:00+00:00",
  "qa_request_deadline": "2024-09-06 00:00:00+00:00",
  "qa_feature_done_1": "2024-09-13 21:00:00+00:00",
  "qa_feature_done_2": "2024-09-26 08:00:00+00:00",
  "soft_code_freeze": "2024-09-26 08:00:00+00:00",
  "qa_test_plan_due": "2024-09-27 00:00:00+00:00",
  "string_freeze": "2024-09-27 00:00:00+00:00",
  "qa_pre_merge_done": "2024-09-27 14:00:00+00:00",
  "merge_day": "2024-09-30 00:00:00+00:00",
  "beta_1": "2024-09-30 00:00:00+00:00",
  "beta_2": "2024-10-02 13:00:00+00:00",
  "beta_3": "2024-10-04 13:00:00+00:00",
  "sumo_1": "2024-10-04 21:00:00+00:00",
  "beta_4": "2024-10-07 13:00:00+00:00",
  "beta_5": "2024-10-09 13:00:00+00:00",
  "beta_6": "2024-10-11 13:00:00+00:00",
  "beta_7": "2024-10-14 13:00:00+00:00",
  "sumo_2": "2024-10-14 21:00:00+00:00",
  "beta_8": "2024-10-16 13:00:00+00:00",
  "qa_pre_rc_signoff": "2024-10-16 14:00:00+00:00",
  "beta_9": "2024-10-18 13:00:00+00:00",
  "rc_gtb": "2024-10-21 21:00:00+00:00",
  "rc": "2024-10-22 00:00:00+00:00",
  "release": "2024-10-29 14:00:00+00:00",
  "planned_dot_release": "2024-11-12 00:00:00+00:00"
}

...with that of a prior version:

~/repos/shipit main *13 ❯ curl -Lv https://whattrainisitnow.com/api/release/schedule/\?version\=129.0a1 2>/dev/null | jq
{
  "version": "129.0",
  "nightly_start": "2024-06-11 00:00:00+00:00",
  "beta_1": "2024-07-09 00:00:00+00:00",
  "beta_2": "2024-07-10 00:00:00+00:00",
  "beta_3": "2024-07-12 00:00:00+00:00",
  "beta_4": "2024-07-15 00:00:00+00:00",
  "beta_5": "2024-07-17 00:00:00+00:00",
  "beta_6": "2024-07-19 00:00:00+00:00",
  "beta_7": "2024-07-22 00:00:00+00:00",
  "beta_8": "2024-07-24 00:00:00+00:00",
  "beta_9": "2024-07-26 00:00:00+00:00",
  "release": "2024-08-06 14:00:00+00:00",
  "dot_release_1": "2024-08-13 00:00:00+00:00",
  "dot_release_2": "2024-08-20 00:00:00+00:00"
}

[bhearsum]

This is fallout-ish from #1489