Bump suite from e75e2a5 to ffaaa0c

Bumps [suite](https://github.com/python-jsonschema/referencing-suite) from `e75e2a5` to `ffaaa0c`.
- [Commits](python-jsonschema/referencing-suite@e75e2a5...ffaaa0c)

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

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

Author: dependabot[bot]