ci: add `importlib_metadata` to `test_get_distributions` [backport 2.9]

[github-actions[bot]]

Backport 68bb423a2ed3ef23a87eb34d32ac96c8d1005016 from #9562 to 2.9.

Follow-up on: https://github.com/DataDog/dd-trace-py/pull/9467/files#r1642430035

Checklist

• [x] Change(s) are motivated and described in the PR description
• [x] Testing strategy is described if automated tests are not included in the PR
• [x] Risks are described (performance impact, potential for breakage, maintainability)
• [x] Change is maintainable (easy to change, telemetry, documentation)
• [x] Library release note guidelines are followed or label changelog/no-changelog is set
• [x] Documentation is included (in-code, generated user docs, public corp docs)
• [x] Backport labels are set (if applicable)
• [x] If this PR changes the public interface, I've notified @DataDog/apm-tees.

Reviewer Checklist

• [x] Title is accurate
• [x] All changes are related to the pull request's stated goal
• [x] Description motivates each change
• [x] Avoids breaking API changes
• [x] Testing strategy adequately addresses listed risks
• [x] Change is maintainable (easy to change, telemetry, documentation)
• [x] Release note makes sense to a user of the library
• [x] Author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment
• [x] Backport labels are set in a manner that is consistent with the release branch maintenance policy

[datadog-dd-trace-py-rkomorn[bot]]

Datadog Report

Branch report: backport-9562-to-2.9 Commit report: e30a290 Test service: dd-trace-py

:white_check_mark: 0 Failed, 1948 Passed, 14 Skipped, 4m 55.79s Total Time

[pr-commenter[bot]]

Benchmarks

Benchmark execution time: 2024-07-19 16:40:31

Comparing candidate commit 948c1334ef85954f17975a51d2b8bc3c338a6599 in PR branch backport-9562-to-2.9 with baseline commit ffa42c66556ee9cd240905c40c8b10d6c3c66adf in branch 2.9.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 209 metrics, 9 unstable metrics.

[datadog-dd-trace-py-rkomorn[bot]]

Datadog Report

Branch report: backport-9562-to-2.9 Commit report: 948c133 Test service: dd-trace-py

:x: 1 Failed (1 Known Flaky), 31 Passed, 295 Skipped, 39.39s Total duration (16.35s time saved)

:x: Failed Tests (1)

• test_get_distributions - test_packages.py - :snowflake: Known flaky - Details

  Expand for error

  ssert {'attrs', 'au...overage', ...} == {'attrs', 'au...overage', ...}
   Extra items in the left set:
   'importlib-resources'
   Extra items in the right set:
   'importlib_resources'
   Full diff:
     {
      'attrs',
      'autocommand',
      'backports.tarfile',
  ..
  

[erikayasuda]

Blocked on this merging 🫠 : https://github.com/DataDog/dd-trace-py/pull/9879

[sanchda]

Closing because this is superceded by 9879 (which is also a backport to 2.9).