Update coverage requirement from ~=7.3 to ~=7.5 (#2420)

Updates the requirements on [coverage](https://github.com/nedbat/coveragepy) to permit the latest version.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](https://github.com/nedbat/coveragepy/compare/7.3.0...7.5.0)

---
updated-dependencies:
- dependency-name: coverage
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/requirements_minimal.txt b/requirements_minimal.txt
index e49b791..4583531 100644
--- a/requirements_minimal.txt
+++ b/requirements_minimal.txt
@@ -3,6 +3,6 @@
 tbump~=6.11
 
 # Tools used to run tests
-coverage~=7.3
+coverage~=7.5
 pytest
 pytest-cov~=4.1