Bump pycti from 5.11.4 to 5.11.6 in /docker/opencti-v4 (#2973)

Bumps [pycti](https://github.com/OpenCTI-Platform/client-python) from 5.11.4 to 5.11.6.
- [Release notes](https://github.com/OpenCTI-Platform/client-python/releases)
- [Commits](OpenCTI-Platform/client-python@5.11.4...5.11.6)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>