Bump coverage from 7.3.0 to 7.3.1 in /reportsizedeltas/tests

Bumps [coverage](https://github.com/nedbat/coveragepy) from 7.3.0 to 7.3.1.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.3.0...7.3.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

reportsizedeltas/tests/requirements.txt

@@ -1,3 +1,3 @@
-coverage==7.3.0
+coverage==7.3.1
 pytest==7.4.1
 pytest-mock==3.11.1