[sentry-junior]

Refreshes .github/workflows/scripts/backend-test-durations.json from recent master runs, following #129569.

Source data: the per-file median of the backend-test-durations-* artifacts from three green full-suite master backend.yml runs: 43146026608, 43140609145 and 43139806889 (master bda8d6a6f4 through d3dd278a2a). All three ran 30 shards with 4 workers on ubuntu-26.04, with no .github/ changes between them. The file was built with the merge then median commands in the backend-test-durations.py docstring and is unedited.

What changed vs master (last resync: #130382)

• 9 test files added, 17 removed. Added: telemetry_classifiers (3), runner/test_main.py, runner/commands/test_devserver.py, debug/utils/test_packages.py, cadence/test_registry.py, receivers/test_users.py, seer/autofix/test_prompt_redaction.py. Removed: 16 old tests/sentry/notebooks/**/*investigation* file names and tests/sentry/migrations/test_0125_clean_up_metric_detector_config.py; none of them exist on master anymore.
• seconds_per_test: 0.406 → 0.386 (−4.9%).
• Files in both versions: total time −5.2% (20,089s → 19,038s). Three files moved by more than 25% and 30s:
  • tests/sentry/api/endpoints/test_organization_releases.py 57.1s → 87.3s (runs: 75.8 / 87.3 / 105.6)
  • tests/sentry/api/endpoints/test_organization_ai_conversation_details.py 47.2s → 78.8s (runs: 64.2 / 78.8 / 82.5)
  • tests/sentry/api/endpoints/test_api_tokens.py 41.1s → 7.5s
• The first two are >50% and >30s above the checked-in value. Neither test file changed since the last resync's source runs, so the cause is unclear (could be source changes or runner variance; not verified).

Not changed: WORKER_SECONDS_PER_SHARD. Shared files shifted well under 15%, so the budget doesn't need retuning.

Checks: test_backend_test_durations.py, test_calculate_backend_test_shards.py and test_pytest_selected.py pass (58 tests), and prek passes on the changed file.

Opened by the nightly backend CI audit.

via automation sched_de6a73f860e60ba77d1f3cfb024722f2 · Run ID sched_de6a73f860e60ba77d1f3cfb024722f2:1794470400000.

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