fix(ci_visibility): support pytest 8.0.0 [backport 2.4]

[romainkomorndatadog]

Backport 78d5b98 from #8357 to 2.4.

Addresses #8220 and fixes an issue with pytest 8.x and above
(brought by pytest-dev/pytest#11137 ) where pytest.Package objects no longer have an attached module attribute.

This also changes the testing matrix to include version ~=8.0, but maintains ~=7.0 as a separate testing environment.

Checklist

• Change(s) are motivated and described in the PR description
• Testing strategy is described if automated tests are not included in the PR
• Risks are described (performance impact, potential for breakage, maintainability)
• Change is maintainable (easy to change, telemetry, documentation)
• Library release note guidelines are followed or label changelog/no-changelog is set
• Documentation is included (in-code, generated user docs, public corp docs)
• Backport labels are set (if applicable)
• If this PR changes the public interface, I've notified @DataDog/apm-tees.
• If change touches code that signs or publishes builds or packages, or handles credentials of any kind, I've requested a review from @DataDog/security-design-and-guidance.

Reviewer Checklist

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

[datadog-dd-trace-py-rkomorn]

Datadog Report

Branch report: backport-8357-to-2.4
Commit report: 93e8dd8
Test service: dd-trace-py

❌ 1 Failed (0 Known Flaky), 95410 Passed, 971 Skipped, 10h 56m 10.12s Total duration (1h 12m 44.28s time saved)

❌ Failed Tests (1)

• test_build_schema - test_schema_fuzz.py - Details

  Expand for error

   Hypothesis test_build_schema(obj={-1.175494351e-38: {'\x91': [18422,
      [],
      nan,
      {},
      {1.175494351e-38: 8697},
      True,
      None]}}
   # Saw 1 signaling NaN) produces unreliable results: Falsified on the first call but did not on a subsequent one