Bump codeigniter4/framework from 4.5.5 to 4.5.6

Bumps [codeigniter4/framework](https://github.com/codeigniter4/framework) from 4.5.5 to 4.5.6.
- [Release notes](https://github.com/codeigniter4/framework/releases)
- [Commits](codeigniter4/framework@v4.5.5...v4.5.6)

---
updated-dependencies:
- dependency-name: codeigniter4/framework
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]