Add compatibility for Python 3.13

[rominf]

What do these changes do?

• Fix tox for Python >= 3.12
• Remove pytest-profiling
• Remove pytest-asyncio traces
• Add compatibility for Python 3.13

Are there changes in behavior for the user?

• Add compatibility for Python 3.13

Related issue number

Closes #403.

Checklist

• [x] I think the code is well written
• [x] Unit tests for the changes exist
• [x] tox testenvs have been executed in the following environments:
  • [x] Linux (Fedora 40): {py38,py39,py310,py311,py312,py313}-{cov}
• [x] Documentation reflects the changes
• [x] Add a news fragment into the NEWS.rst file
  • Add under the "aiosmtpd-next" section, creating one if necessary
  • You may create subsections to group the changes, if you like
  • Use full sentences with correct case and punctuation
  • Refer to relevant Issue if applicable

[webknjaz]

@rominf this needs rebasing

[rominf]

@webknjaz I rebased the PR. Could you please re-review it?

[webknjaz]

@rominf I've triggered the CI for you but I'll leave it to the maintainers to merge. It looks like you missed a dependency file update somewhere (the CI doesn't call tox it seems).

[rominf]

UPD: ah, disregard this. tox is called indirectly via release.py.

@rominf I've triggered the CI for you but I'll leave it to the maintainers to merge. It looks like you missed a dependency file update somewhere (the CI doesn't call tox it seems).

It looks it like it is not in GitHub Actions workflows at all (rg is ripgrep):

$ rg tox .github/
.github/pull_request_template.md
20:- [ ] tox testenvs have been executed in the following environments:

.github/PULL_REQUEST_TEMPLATE/pull_request_template.md
20:- [ ] tox testenvs have been executed in the following environments: