Bump coverage from 7.2.5 to 7.2.6 (#342)

* Bump coverage from 7.2.5 to 7.2.7

Bumps [coverage](https://github.com/nedbat/coveragepy) from 7.2.5 to 7.2.7.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.2.5...7.2.7)

---
updated-dependencies:
- dependency-name: coverage
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

* Install dependencies from source for 3.12 alpha 4

Because coverage.py's wheel is built for the beta and ABI-incompatible.

* Fix comparisons

* Revert "Fix comparisons"

This reverts commit 0a0d02f.

* Revert "Install dependencies from source for 3.12 alpha 4"

This reverts commit 857434c.

* Pin coverage==7.2.6 while testing Python 3.12 alpha 4

To avoid installing an ABI-incompatible wheel built against a beta

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Hugo van Kemenade <hugovk@users.noreply.github.com>

dev-requirements.txt

@@ -1,5 +1,7 @@
 -r requirements.txt
-coverage==7.2.5
+# TODO Pin coverage==7.2.6 while testing Python 3.12 alpha 4,
+# to avoid installing an ABI-incompatible wheel built against a beta.
+coverage==7.2.6
 pytest==7.3.1
 pytest-aiohttp==1.0.4
 pytest-mock==3.10.0