Bump coverage from 7.6.2 to 7.6.3 in /dev_requirements

Bumps [coverage](https://github.com/nedbat/coveragepy) from 7.6.2 to 7.6.3.
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.6.2...7.6.3)

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

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

dev_requirements/requirements-coverage.txt

@@ -5,5 +5,5 @@
 #
 #    pip-compile-multi
 #
-coverage==7.6.2
-    # via -r dev_requirements/requirements-coverage.in
+coverage==7.6.3
+    # via -r requirements-coverage.in