Bump crewai from 1.5.0 to 1.6.0 in /py-django-crewai (#168)

Bumps [crewai](https://github.com/crewAIInc/crewAI) from 1.5.0 to 1.6.0.
- [Release notes](https://github.com/crewAIInc/crewAI/releases)
- [Commits](crewAIInc/crewAI@1.5.0...1.6.0)

---
updated-dependencies:
- dependency-name: crewai
  dependency-version: 1.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

py-django-crewai/requirements.txt

@@ -8,7 +8,7 @@ gunicorn==23.0.0
 pytz==2025.2  # Timezone support
 
 # CrewAI and dependencies
-crewai==1.5.0  # Latest stable version with improved event system
+crewai==1.6.0  # Latest stable version with improved event system
 langchain==1.1.0
 langchain-openai==1.0.3
 pydantic==2.12.4  # Maintain compatibility with CrewAI's Pydantic v2 usage