Bump django from 4.2.7 to 5.1.6 in /graph_tutorial

Bumps [django](https://github.com/django/django) from 4.2.7 to 5.1.6.
- [Commits](django/django@4.2.7...5.1.6)

---
updated-dependencies:
- dependency-name: django
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

graph_tutorial/requirements.txt

@@ -1,4 +1,4 @@
-Django==4.2.7
+Django==5.1.6
 msal==1.31.1
 python-dateutil==2.9.0.post0
 PyYAML==6.0.2