chore(ci): hot fix for CI [backport 2.9]

[romainkomorndatadog]

Backport 48df6fa38ae108a49099fc3548a990546f72819f from #9629 to 2.9.

• fix CircleCI workflow
• fix django and celery test suite

For celery, one venv is currently skipped as there is no possible solution due to a pip bug

Does not fix profile and tornado suites.

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-9629-to-2.9 Commit report: f486ff7 Test service: dd-trace-py

:x: 8 Failed (0 Known Flaky), 125420 Passed, 49994 Skipped, 4h 17m 14.72s Total duration (6h 2m 45.25s time saved)

:x: Failed Tests (8)

This report shows up to 5 failed tests.

• test_on_executor_custom_kwarg - test_executor_decorator.py - Details

<details>
<summary>Expand for error</summary>

```
assert 'tornado-web' == None
 +  where None = <Span(id=10467850049686230040,trace_id=136224274664610014017056462141516288040,parent_id=11734856898747822262,name=tornado.executor.with)>.service
```
</details>

• test_on_executor_custom_kwarg - test_executor_decorator.py - Details

  Expand for error

  ``` assert 'tornado-web' == None + where None = .service ```

• test_on_executor_exception_handler - test_executor_decorator.py - Details

  Expand for error

  ``` assert 'tornado-web' == None + where None = .service ```

• test_on_executor_exception_handler - test_executor_decorator.py - Details

  Expand for error

  ``` assert 'tornado-web' == None + where None = .service ```

• test_on_executor_handler - test_executor_decorator.py - Details

  Expand for error

  ``` assert 'tornado-web' == None + where None = .service ```