build(deps): bump check-jsonschema in /requirements

Bumps [check-jsonschema](https://github.com/python-jsonschema/check-jsonschema) from 0.28.0 to 0.28.1.
- [Release notes](https://github.com/python-jsonschema/check-jsonschema/releases)
- [Changelog](https://github.com/python-jsonschema/check-jsonschema/blob/main/CHANGELOG.rst)
- [Commits](python-jsonschema/check-jsonschema@0.28.0...0.28.1)

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

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

requirements/gha-schema.txt

@@ -1 +1 @@
-check-jsonschema ==0.28.0
+check-jsonschema ==0.28.1