Adjust import timings test for python 3.12

[bdraco]

What do these changes do?

3.12 is expected to be a bit slower because of trade-offs that favor run-time performance over import time performance

Are there changes in behavior for the user?

no

Is it a substantial burden for the maintainers to support this?

no

Related issue number

Checklist

• I think the code is well written
• Unit tests for the changes exist
• Documentation reflects the changes
• If you provide code modification, please add yourself to CONTRIBUTORS.txt
  • The format is <Name> <Surname>.
  • Please keep alphabetical order, the file is sorted by names.
• Add a new news fragment into the CHANGES/ folder

  • name it <issue_or_pr_num>.<type>.rst (e.g. 588.bugfix.rst)

  • if you don't have an issue number, change it to the pull request
    number after creating the PR

    • .bugfix: A bug fix for something the maintainers deemed an
      improper undesired behavior that got corrected to match
      pre-agreed expectations.
    • .feature: A new behavior, public APIs. That sort of stuff.
    • .deprecation: A declaration of future API removals and breaking
      changes in behavior.
    • .breaking: When something public is removed in a breaking way.
      Could be deprecated in an earlier release.
    • .doc: Notable updates to the documentation structure or build
      process.
    • .packaging: Notes for downstreams about unobvious side effects
      and tooling. Changes in the test invocation considerations and
      runtime assumptions.
    • .contrib: Stuff that affects the contributor experience. e.g.
      Running tests, building the docs, setting up the development
      environment.
    • .misc: Changes that are hard to assign to any of the above
      categories.

  • Make sure to use full sentences with correct case and punctuation,
    for example:

    Fixed issue with non-ascii contents in doctest text files
    -- by :user:`contributor-gh-handle`.

    Use the past tense or the present tense a non-imperative mood,
    referring to what's changed compared to the last released version
    of this project.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.56%. Comparing base (6ec4747) to head (f660d19).
Report is 3 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #8260   +/-   ##
=======================================
  Coverage   97.56%   97.56%           
=======================================
  Files         107      107           
  Lines       32936    32938    +2     
  Branches     3851     3851           
=======================================
+ Hits        32133    32135    +2     
  Misses        602      602           
  Partials      201      201           

Flag	Coverage Δ
CI-GHA	97.47% <100.00%> (+<0.01%)	⬆️
OS-Linux	97.14% <100.00%> (+<0.01%)	⬆️
OS-Windows	95.81% <33.33%> (-0.01%)	⬇️
OS-macOS	96.95% <33.33%> (+<0.01%)	⬆️
Py-3.10.11	95.55% <33.33%> (-0.01%)	⬇️
Py-3.10.13	96.69% <33.33%> (-0.01%)	⬇️
Py-3.10.14	96.91% <100.00%> (+<0.01%)	⬆️
Py-3.11.8	96.92% <100.00%> (+<0.01%)	⬆️
Py-3.12.2	97.05% <100.00%> (+<0.01%)	⬆️
Py-3.8.10	95.52% <33.33%> (-0.01%)	⬇️
Py-3.8.18	96.88% <100.00%> (+<0.01%)	⬆️
Py-3.9.13	95.52% <33.33%> (-0.01%)	⬇️
Py-3.9.18	96.66% <33.33%> (-0.01%)	⬇️
Py-3.9.19	96.88% <100.00%> (+<0.01%)	⬆️
Py-pypy7.3.15	96.45% <33.33%> (-0.01%)	⬇️
VM-macos	96.95% <33.33%> (+<0.01%)	⬆️
VM-ubuntu	97.14% <100.00%> (+<0.01%)	⬆️
VM-windows	95.81% <33.33%> (-0.01%)	⬇️

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[patchback]

Backport to 3.9: 💚 backport PR created

✅ Backport PR branch: patchback/backports/3.9/2434bfe855be75fc6cd156488d37d3971a8a320b/pr-8260

Backported as #8265

🤖 @patchback
I'm built with octomachinery and
my source is open — https://github.com/sanitizers/patchback-github-app.

[patchback]

Backport to 3.10: 💚 backport PR created

✅ Backport PR branch: patchback/backports/3.10/2434bfe855be75fc6cd156488d37d3971a8a320b/pr-8260

Backported as #8266

🤖 @patchback
I'm built with octomachinery and
my source is open — https://github.com/sanitizers/patchback-github-app.