Bump cakephp/debug_kit from 4.9.3 to 4.9.6

Bumps [cakephp/debug_kit](https://github.com/cakephp/debug_kit) from 4.9.3 to 4.9.6.
- [Release notes](https://github.com/cakephp/debug_kit/releases)
- [Commits](cakephp/debug_kit@4.9.3...4.9.6)

---
updated-dependencies:
- dependency-name: cakephp/debug_kit
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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